1999 Jeep Grand Cherokee BCM replacement
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- čas přidán 27. 11. 2011
- WhizKid demonstrates the procedure to replace the Body Control Module (BCM) in his 1999 Jeep Grand Cherokee to solve issues with an electrical problem.
- Auta a dopravní prostředky
Thanks so much WhizKid you got me through it! The BCM switch fixed some things. Still couldn't get windows to roll to pass inspection but then wife's sister messed about, pulled back the rubber cover for the door wiring and found a split off wire. I'm not mechanical at all but after your help with the bcm i felt more comfortable poking around that area for the other side of the wire cluster, fed more of it out to the door, and managed to find that pesky bugger and get em cinched up together. Bless her heart. Everybody else that even glanced at it wanted me to replace the whole rest of the car part by part just to get to that one little wire! So the driver's panel controls are a go now! Again thank you so much for making a video that was so simple and thorough that even I thought I might give it a go!!! The WhizKid rules!
Ran out of characters in previous post. I wanted to add that by having the key in the on position, taking the negative off the battery, removing the old BCM and replacing with the new BCM then placing the negative back on the battery the new BCM is programed. We were told by the repairman that the re-programing of the new BCM was part of the reason for the expense. If these steps are followed the new BCM is programed and ready to go. THANK YOU SO MUCH FOR POSTING THIS YOU SAVED US OVER $700.
THANK YOU so much for this helpful video. Repairman told us $700-$1000 to replace the BCM. Went to the junkyard and bought the BCM for $35. We were sure to buy the part off of the same model, 2000 Grand Cherokee, V-8, 4.7L. Followed the instructions on this video except for one thing the man at the junk yard told us to turn the key to the on position, take the negative off the battery, then take off the old BCM and replace the new BCM. When complete place cable back on battery. FIXED!
Thank you for this video. The BCM is not the easiest thing to find let alone replace, but your video has just saved me big time. Well done.....
There is a large black wire in the rubber boot between the drivers door and the body that breaks into. This causes some issues with the dash lighting, gauges not working, rear windows rolling down by themselves, A/C stops working and other things I may have not noticed. When that large black wire breaks in half, the wire is still touching at times, depending on if the door movements breaks the contact or not. I removed the BCM, Hood Latch handle and a few other things, to get access to the back side of that boot. I removed that black wire from the housing then under microscope, pried the legs of the terminal open to remove the old wire, then I crimped in two 16AWG wires that will bend easier when the door opens. I then soldered the two wires to the large black wire, after it passed the boot, so the solder joint would not flex, when the door is used.
Thank you for posting this! All of the diagrams vaguely mention it's on the driver side of the car but not exactly where it's located!
Thank you ,ubaqtpi , I'll try that when I get a chance . I've already took the replacement BCM back, but I'll try it anyway ,nothing to lose at this point and at this point I'll try anything . I'll get back to you on how it goes later .
Thank you ,
Whizkid
Thank you for the video! It allowed my father to replace his bcm with confidence which did indeed solve the many issues he was having for over a year!
Thanks for posting this video. Changed the bcm which fixed my problems.
What were your problems i have an 02 that's giving me hell.. something new every day
Good job Whiz kid
Just removed BCM in my Jeep Grand Cherokee ‘04 4.7 without removing the whole fuse box (not sure if ‘99 and ‘04 are exactly the same though). I moved the seat back as far it goes, took a torch and had a good look under the fuse box to see how everything is arranged. The next part is tricky as you have to remove the 4no. T20 screws that hold the BCM to the fuse box, without seeing what you are doing; now I think it would be a good idea to use a small mirror just to get the key right into the screw. Makes it easier if you disconnect the grey and white plugs from the BCM first and move the cabling out of the way. With all screws out, I had to use a screwdriver to gently push the BCM out of the fuse box (it is very tight so be patient). Job done with less effort than in this video, although it was good to watch it to better understand how all the parts are connected.
Good video. I've got a crazy situation with a battery drain with key off.1997 Jeep TJ. I disconnected the neg battery cable and connected my test light to the cable and then touched the battery post with the test light and it lit up bright. Obviously something is on. So I started pulling fuses one by one and when i pulled the 10 amp fuse controlling my gauges the light went out. However the gauges are never on with the key off, yet the circuit is on constantly. . I plug the fuse back in and the test light again lights up bright. What ya think? Darn, I wish I still had my old CJ5!!!
Hey ES, what electrical problems were you having that brought all this on in the first place?
I have a '99 WJ too. Thanks for sharing.
Just did this. Saved me $1278@ the mechanic. For reference, the star screws take T20. The two squares with the center screws will unscrew to a certain point, then you have to squeeze the sides of the squares to remove them. This is easy, do it yourself and save the money. Took me an hour total.
What were the problems that you were having that it fixed?
Sunny Gardner I have battery drain issues, among other electrical problems.
HeadLights flickering both while driving and while the car sat turned off. Got the bcm off eBay for $50, took me an hour to install.
You're welcome ubagtpi. That's interesting about programing the BCM that way. I'm not sure if WhizKid tried that method. I'll have to run it by him. Thanks for the info. Something is bound to fix his jeep. -MrFixit
Thanks, this helped a lot!
Jesse ,
If the fuse blows instantly then that means that you have a direct short or overload somewhere . Look for a bare wire that has the covering wore off and touching ground somewhere or a pinched wire somewhere that has gotten pinched somewhere and shorted to ground . Also , look to see if water has gotten into the tail light assembly also check to see if there's a circuit board in the tail light assembly . It could be shorted .
Whizkid
Very well explained! Thanks
bob,
My battery is about a year old now and it's not draining it down yet . When I get out I make sure that the lights go off .
Whizkid
@ypahihi Thank you ,glad that I was able to help you save big time .You are right , the BCM is not easy to get to, let alone change . Unfortunately ,it didn't solve my problem . Glad it helped you with your problem.
Whizkid
Just did a parasitic test on all my fuses and found out my jb power fuses are pulling amps and draining my battery. What would be a good way to fix it/ find where the short is?
Adam Lamb ,
Actually , yes it could be the body control module doing that or possible a bad ground / loose connection doing it . The body control module controls these things . I've also been told that you have to have them programmed to your particular vehile . I haven't gotten mine fixed yet so maybe you can help me . What exactly are you calling the Multifunction Control switch ? The levers on both sides of steering column ? Are these jeep on the internet ?
Thanks,
Whizkid
Nicely done. Easy to follow, BUT PLEASE HELP!...My 99 Cherokee is having elect. troubles. Cluster not working, proved it's good, cleaned negative contacts near battery.
( I have not changed battery terminals yet) Checked all fuses, investigated loose, or bad connections. No issues found yet. Interior fan comes on at will when in the on position, and the a/c compressor still kicks in while the heat is on.
Whats happening?Anybody know?
@ypahihi Not to my knowledge. He replaced the BCM and instrument panel to no avail. Still looking for the problem. -MrFixit
I have a jeep also with the lights coming on and off at night and killing the battery. This is due to a malfunction with the "Auto" setting on the light switch common for these jeeps. IF you switch it to the off position, you won't have this problem. You can replace the entire switch but doesn't seem very cost effective to me.
My 02 Jeep Grand Cherokee, has the rear taillights out. I checked the park light fuse, found it blown and replaced it. Still no lights, even when I press the break peddle. The front/headlights are fine. I also noticed that on the shifter console there are no lights. Is there a connection between the two? (this all started after hooking up a mini trailer).
Question. I have a 2005 jeep liberty. 120,000 miles. Having a problem with low beams not working. Brights, parking, fog, dome lights, etc all work. Only thing that dont work is low beams. New bulbs so they are not burnt out. Low beam module is good. When the module is in the lights work but never shut off and kills the battery. Have to take module out to shut off low beams. Could a bad BCM be the cause of it? Or a multi function switch? Or maybe a specific place to start looking with the wiring? Also check engine light came on. Pulled codes said cylinder 3 misfire. Its sucking up antifreeze like crazy. 1 gallon in a weeks time. No noticeable leaks. Everything looks dry and no puddles underneath. Could it be head gasket needs replaced or would you guess something else to look at? Cars never over heated while I've owned it which has only been the last 3 weeks. Temp gauge stays the same. Any help to point me in the right direction or even some ideas would be helpful. Thank you!
Bob, are you talking about the switch on the console? As in the blinker lever and all? I'm having the same issues, but I have tried keeping the dimmer off like B2dawgs said and it doesn't work all the time.
Juan,
Try to see if your bulb is shot , or if you have a circuit board in your tail light . Do you have a trailer box connection on it ? If so check that . Also , check your grounds .
Whizkid
I replaced the BCM, but it didn't fix my issues. How did you end up fixing your jeep?
moparlarry,
A mechanic told me one time that they made an updated version to my bcm and that they had to be programmed to your vechile . Don't know if it's true or not but you could try that . Haven't gotten mine fixed yet .
Whixkid
How you replace the factory keyless if not working. Remotes are fine just will not work far distance only next to the car. 2001 jeep gc?
I have the same jeep except 2004 I have no tail lights. No 12v all the way front passenger dash connector and still can't find the 12v I need to power my tail lights where should I look next
Rose ,
It sounds like a bad / loose connection wheather it be a ground or a hot wire . Your BCM could also be bad or going bad , possible .
Whizkid
Missy ,
Sorry for taking so long to answer, but been busy with work and doctor visits.. Have you looked for a blown fuse , fuse link ,bad connection or loose ground ? The bulb connectors in the bulb socket could also be corroded . Try some contact cleaner . Does the front left turn light work ? If not then it could be a bad turn signal switch . Maybe a bad flasher or other bulb in the system ? They both can shut down a signal system .
Whizkid
Randall ,
You're welcome .
Whizkid
Thank u amigo.
Bobi ,
Look up under the hood as there are more fuses/ relays in a box there near the battery . At least there is on my 1999. You could have hooked up a wire wrong on trailer or the vechile trailer connector. You could have shorted out a fusealbe link or your BCM .
Whizkid
Maaaaaan I have been working on my Jeep since I got it so this was easy I just couldn't find the bcm. I did read another comment that says to turn the key to on position and remove the negative cable replace then reconnect the battery. INSTANT FIX! Thanks man.
Scheryl,
I can't help much as mines still not fixed . There are so many things on there that's electronic and could be causing the problem by overloading or confusing the computers ( google problems on these vechiles ) . It could be a loose wire , bad connection , bad ground as well as a bad computer . One mechanic said that they sell an updated BCM for these vechiles and one sait that the BCMS need to be programmed to your vechile . Heater problem could be if it has the dual climate ...
I have a 99 Jeep Grand Cherokee Laredo. Having multiple issues, radio cuts off and on , air bag light on, blinkers front and back work whenever they feel like it, middle console lights go in and out. Ugh! Tried to call around, investigated, googled Lol Looks like the BCM might be my issue. I'll be purchasing one from ebay that has a return policy to see if this resolves it.
@ypahihi No , I haven't yet. Sooner or later I will hopefully .
Whizkid
@ ESREPAIR...i am so fustrated, along with my machanic...can you tell me if replacing the BCM resolved the issue for you, i have the same model as you except i have a 2000...machanic was told to start @ drivers door & look for any burnt wiring harness problems, & after double cking he found one, bingo gauges came back on, BUT 3 days later & I'm back to same thing?? also dont know if this is connected to>BUT no heat on passenger side weird I know, any help would be great~Sher
help my Windows and over head console lights have stopped working, took car to shop, was told that it's not the switch, but could be bcm, I want to know what you think. my dash lights do sometimes flicker as well
Ever get it figured out?
What was your problem that made you replace the bcm. I have a 99 Jeep Grand Cherokee. My inter light won’t work and my lights on the shifter work part of the time. And every so often my rear passenger window goes down when I start my Jeep. I am wondering if this is my problem.
Crazy my 99 jeep grand cherokee does everything you said to the T did you ever figure out what it was
I have a '99 Laredo. I believe my BCM is dead. I crawled under the dash and it appeared that I could disconnect the module without removing fuse boxes and interior panels. Is there a reason you went this route?
Hi Julia, I am glad he did because I am unable to get up under the dash like that due to a bad back. I still want to know about flashing the module. Does that require a trip to the dealer Whizkid? My symptoms include gauges going nuts, zeroing out, drivers main control of power windows not working, power locks not working, power mirror not working, radio dead, and when I replaced the drivers side rear window switch my battery went dead.
Hello I just bought a 97 grand cherokee laredo form an auction and it runs great but sometimes while driving the lights (headlights dashboard reading lights) will flicker on and off. Does anyone know why this is happening?
Why does the fuse pop when i open the key and the windows frm the right side wont go up or dwn or lock or unlock
hi ubaqtpi, i just may have to replace the BCM {2000 v8 jeep grand limited} my gages not working AGAIN, mechanic did find a small burn drivers door, cleaned it up gages back on, 3 days later off uggg, also no heat on passenger side, could you tell me what issues you were having? & how much can I expect to pay for a New BCM? also thank u so much for install procedure will pass on info to my mechanic~any help so appreciated.
What the reason you replace the BCM?
read your post to ESRepair, i have a 2000 also. machanic & I are both fustrated..he has replaced fuses & got my gauges working, only to quit again, just recently found a wire in drivers door{because someone @ chrysler told him to start looking there first} & found small burn cleaned it up bam gauges back on, also door locks & windows worked again WEIRD, I also replaced an expensive battery, last yr? something u should know inter/lights stay on but if i open hatch & close again they go off? help
I have a 98 grandcherokee limited 5.9 . just purchased month ago. has aquired a few quirks. first. engine acts like turning key on and off.passenger window works on occasion . heater controls work on occasion. dome lights won't go out with key out. I have replaced the ignition switch, and the bcm module . they made no changes , I;m lost, Larry
Hello my wj is a 1999 as well and the cluster works when the car is turned on, then gauges all fail and all lights in the cluster come on, at times the gauges will work a few seconds while driving then stop. its had electrical work done to it b4 and not by a professional. Windows will work most of the time. Overhead console has a mind of its own as well. Would your next step be to check bcm.. also heard it could be the wire from bcm to battery. any idea which one i should look at/test? thanks for your time!
Im having the same issues on my 2000. Hoping changing the BCM will help.
I have the same issue and a really crazy thing is... if you push on the trip meter post...everything will work until the next bump in the road.
how did you know it was bad I have a 2002 dodge ram1500 and my wipers,horn,brakelights,turing signals quit working I took the battery out broke the neg cable that hooks the battery and fender I messed up I started it and ever sense they quit working is it the power control module or a center distribution center
Hi.quick question my horn and alarm system were fine till a week ago i went to open my car with my keys and my alarm sound was hideous,it didnt even sound like a regular alarm its a whiny sound aswell as my horn.Can you please help,can it be a fuse,or speaker or smthing else.?
Natasha ,
Not for sure , but I'd say that it could be a problem with the alarm controller or a bad ground , loose connection. Could also be a problem with the wireless part of alarm system like the key fob or the body control module.
Whizkid
Thanks
I had this happens to me before! It the security controller behind the ignition switch
Hello whizkid, I'm having an issue with my 00 Jeep Grand Cherokee. The brake lights don't work. I replaced the brake switch n nothing . I checked the fuses and found that the brake fuse was out. I tried n replace it with a new one n it will blow out instantly. Running out of Ideas on what to check and where to check..
Thank you for any help Whizkid..
It's a wonderful source of info is this YT. The most unfortunate and common problem with it is people that lack editing skills.
All the vids of people that appear to fiddle and fart and fidget and fumble and, there was another one, oh yeah, fuck around , that with a little good editing could result in something worthwhile. I end up missing any good points made because I'm FF through the rambling crap. Trying to get a job done is so time consuming already without having to decipher what some alligator gar fisherman is saying , especially when he has treacle gluing his tongue to the roof of his gob.
But thanks anyway. I stlll appreciate your video.
Actually, bigbuck14716, I didn't know if it was bad or not . My mechanic said that it controlled these body functions ,so we decided that it wouldn't hurt to try and rule out the obvious first . It''s a computer that controls all of yor body functions ,like windows , instrument panel ,etc. Sort of like a brain . The windows are spposed to be controlled by the BCM .
Whizkid
how to change a blown fuse for a 2000 Jeep Cherokee
MrFasteddie8897 ,
As we showed and explained in the video , I replaced the BCM because of the instrument panel goind dead as well as a few other things not working right . The BCM controls these things . It was the first thing that my mechanic said to change for that reason . Thanks for watching.
Whizkid
I'm having a issue with my left tail light... I tried replaceing the light bulb... that didn't work... what could be the issue? Please help....
I know this is an old post, but mine had the same problem. The plastic melted under the bulb contact. I got a replacement assembly from a junk yard to fix the problem.
you are going to need to replace the light switch, I had the same issue for about 3 years and it worked perfectly fine if not on the auto so I left it alone. during that time my battery kept draining so after 2 days of inactivity would have to jump start the vehicle .. 3 battery later and 2 alternators 1 day replaced the light switch with one from salvage yard for $15 and fixed all my light and batt drain issues.. by not replacing the switch it cost be about $300 from batt and alternators etc.
That's a bummer. Did you discover what the problem was?
Interior lights won't go off.
'Key in ignition' chime goes even after you remove the key if the drivers door is open. (Only the drivers door, none of the other doors cause it.)
I removed the fuse for the interior lights. "Key in ignition" chime still sounds until you close the door, but the lights are off.
Even with the fuse removed the battery still goes dead after a while if it sits.
I replaced the BCM, no luck. Anybody have any ideas?
Joe Primal Did you ever figure this out? My Jeep just started the exact same behavior two days ago, and I'm at a loss.
Chris Broussard From what I've been able to find out it's usually caused by a wire shorting to ground or a broken wire in one of the front doors. I made the mistake of switching out a couple of computers from eBay first and lost the originals which got me lost deeper and deeper in the mire because I guess some of the computers have to be programed or something at the dealer to work with the others. Everything I could find was very vague.
In any case, from what I understand the best thing to do is get a meter and pull off door panels and the dash and start looking for problem wires. I just ended up facing the fact that my jeep was really not worth that much and I parked it and filed a non op on it. IDK what I'm going to do with it over the long run.
I bought a 4runner. They still have problems, but when they do you can always fix them cheap and easy.
Wish I had a better answer for you, but Dodge Jeep are notorious for electrical gremlins. Changing out the computers got me nowhere. In fact worse and worse problems. It might be well worth it to take it to an auto electric guy who might have some experience with it. Good luck.
Joe Primal Thanks Joe - Appreciate the response and advice. I'll start checking wires...
Got a seemingly (to me) dumb ass question for ya. 1999 location for BCM and 2000 should be the same yea? Also, could this be whats causing my lights to come on and off at night and kill my battery. My logic says yes, but i'm hearing from other jeep people that it could also be my Multifunction Control Switch. I know this video is old, but thanks if you can get back to me with any insight. much appreciated.
It's a grounding issue, not the bulb.. Replace the tail lights with aftermarket ones from eBay. I got some several years ago for $60.00, and they work perfectly.
You undo the negative not the positive battery cable.
control then it could be a blender door broke as well as a motor gone bad . It could even be related to your guage problems . I replaced the BCM as well as the instrument panel with used ones , but it didnt fix it. cost for these items depends on wheather or not you buy new or used and who you have to work on it . You should see the things that mine does . If I can help you more or if you get any new leads to help me please send me a message and I'll do the same .
Whizkid
Probly dumb quest or.wrong video but my 99 jeep chero/lorado 4.0 6cyl has had a small knocking for a while. Now out of nowhere just driving normal i go to apply gas and itll lose power to point of almost stalling. Itlk idle fine but go to give gas and power loss and a loud clunk. 236k on it and just worried engine is done. Any sugg already did fuel filter and no improvement
B2dawgs,
Actually it's the same in manual too . butt could still be in the light switch.
Whizkid
countrryy...!!! LOL.. this kidding with your accent...thanks for the info..
I got a jeep grand cherokee 2000 4x4 v6
I was a bit distressed when I saw you suggesting to all of the people that watch this video that they should unhook the battery. Well, you're partially correct. It is extremely important to ONLY remove the NEGATIVE terminal. WHY, you may ask? A: When you remove the positive terminal, you erase all of the radio stations preset into your system (Simply removing the negative cable does not erase your programmed stations). B: When you disconnect only the negative terminal, it resets your on-board computer. If you unhook both, it will NOT reset the on-board computer. C: If you disconnect BOTH the negative and positive terminals AND have an after-market alarm system, you JUST shorted it out and now you can't start the vehicle because it thinks it is being stolen. You're welcome.
spugsautorepair Ok, that's interesting. You state that current still flows if you leave the Positive connected. This would maintain the presets in the radio. However, current must flow for the presets to remain in memory. If you just disconnect the Negative from the battery, how does current flow now that the circuit is broken? ? There must be a complete path for current flow to maintain Memory. It doesn't matter if you only disconnect the Negative or Positive or both. current cannot flow without a complete path between the positive and Negative terminals, therefore, nothing works without electricity.... --MrFixit
spugsautorepair so how do you put a new battery in a car with an aftermarket alarm if you can never remove both battery cables
you sir know nothing...
10 milla socket to unboat it
I love you
Paging: Mike Hunt! Please meet mister Dick Hertz at the information desk! ... that's right up there with "is your refrigerator running?" lol
i always undo the ground
Disconnect the negative not positive
You forgot that you need to have the bcm flashed so that it works with the other 2 computers that are in the jeep. Otherwise it won't work
That's a 2004 jeep.
I have the same one its 99.
Numbers are wrong. That's why it didn't work