BMW B+ BST Battery Safety Terminal How To DIY Replace - 3 series 5 series Z4M E85 E86 X1 X3 X5
Vložit
- čas přidán 25. 07. 2024
- How to Replace BMW B+ BST Battery Safety Terminal on ANY BMW such as 3 series 5 series Z4M E85 E86 X1 X3 X5
If your BMW won’t start after an accident or after a minor “bump” event, such as hitting a kerb, then there is a good chance that the battery safety terminal that is fitted onto the B+ positive terminal of your battery has triggered.
Of course, if a BMW DTC code has been triggered, which has resulted in the SRS airbag warning light coming on, then this will be clear.
I highly recommend the Creator C110+ Fault Code Reader for clearing your BMW airbag light (Once you have fixed the fault) - Costs $45 / £48 and will SAVE you that much the first time you use it!
UK link: amzn.to/3qamVLg
USA link: amzn.to/3gHK9Db
BUT in many cases, even when an airbag light hasn’t come on, it is still possible that the BST has blown.
IN THIS VIDEO - I will go through the symptoms of a blown BST and show you how to check yours, so that you can be sure that it has activated. I will then cover two possible fixes!
1) How to do a Temporary “Get you home fix”
2) How to replace the BST with a good condition used part and save yourself money!
In this video, the car featured was a BMW Z4M coupe E86. However, this information should be relevant for the following cars (probably plus many more too!), your battery may just be in a different location and the shape of your positive battery terminal connection may look slightly different.
BMW 3 series E46 and E90
BMW 5 series E60 and F10
BMW 6 series E63 and E64
BMW Z4 E86, E86 and E89
BMW 1 series E82 and E88
BMW X1 E84, X3 E83, X5 E70 and X6 E71
PLEASE NOTE: For the permanent fix mentioned above, especially if your airbag light is on, you really need to check the SRS system using a diagnostic tool such as BMW V57 DIS software or a BMW specific fault code reader. There is a chance that the trigger signal is still in place (for example from the front bumper) and if you replace the BST, it might just blow again. If your airbag light isn’t on then the chances are good that the BST blew due to a one-off trigger, therefore you SHOULD be able to go ahead and replace it but I STILL highly recommend that you check for codes first.
I have two videos available to help with this:
💡 Read check erase codes with BMW DIS V57 Software - • BMW SRS Warning Light ...
DIS V57 software and cable
www.cable-shack.co.uk/
💡 Read check erase codes with Creator C110+ Fault code reader - • BMW SRS Airbag Light S...
Creator C110+ Fault Code Reader
UK link: amzn.to/3qamVLg
USA link: amzn.to/3gHK9Db
- SUPPORT -
If you like my work and want to help to support this channel you can use the link below and buy me a coffee. Thanks!
www.buymeacoffee.com/ReviveMy...
Or maybe give me a THUMBS UP! 👍 👍 👍
In this guide I will cover the following:
00:00 Intro to How to fix BMW B+ Battery Safety Terminal on 3 series 5 series Z4m E86
00:16 What are BMW BST Symptoms
00:25 BMW Z4 SRS system sensor locations
01:00 BMW BST Location
01:10 BMW Positive Battery Cable
01:21 How to Check a BST
02:00 BST bypass
02:11 Remove negative battery terminal first
02:21 BST temporary Repair
03:15 How to replace a BST
03:53 Blow Pyro on BST
04:04 What a good Pyro on a BST looks like
If you liked the video, please consider subscribing! 😎 The link is here: ➡️ czcams.com/users/ReviveMyRid...
BMW B+ BST (Battery Safety Terminal) How To DIY Repair - 3 series 5 series Z4M E85 E86 X1 X3 X5
If you would like to share this video, thanks and here is the link:
➡️ • BMW B+ BST Battery Saf...
#BMWB+, #BMWBST, #DTCCode, #BMW, #Z4M, #E86, #ReviveMyRide
Affiliate links: This video and description contains affiliate links, which means that if you click on one of the product links, I may receive a small commission (at NO additional cost to yourselves). I will ONLY link to parts and tools with the same criteria as I would if buying for myself! Which is usually a balance of price, quality, performance and cost. I only recommend products that I have used myself and that I genuinely feel are great products! This small income helps support the channel and allows me to continue to make videos like this. Thank you for the support! 😀
DISCLAIMER: Please note that this video and its content is intended for information purposes only. Although every effort is made to ensure that all the information is correct, there is no guarantee that this is the case. This video should not be considered a substitute for seeking independent advice or the services of a professional. Any work that you carry out on your vehicle or vehicles in your care are at your own risk. - Auta a dopravní prostředky
🔥 THIS VID MAY INTEREST YOU! - Fixed the BST? Here's How to RESET the SRS Light! czcams.com/video/Fkon2rxijs0/video.html
Thanks a lot! I hit a curb and side airbag deployed. Stood there with my hazards and considered calling a tow truck because the car wouldn’t start. Then remembered CZcams is a gold mine so tried my luck there at the side of the road and yeah, that saved me a lot of money. Cheers man!
Wow, thanks for sharing your story! I think it's great that you found the video and it got you going again! Also, good working getting it done there and then on the roadside! ☺ Glad the video helped you! 👍
Very good job on a Clear and Easy to Hear and understand video!
Thanks very much!
Excellent audio. Cheers
Glad you liked the video and thanks for your comment! 😀
Great video.. well explained thanks you need more subs if your vids are like this one.
Thanks very much! 🙌 I try pretty hard for similar quality to this, it’ll come…. 👍
thanks Lee
Of the number of CZcams videos around the BMW BST this video is far and away the best at explaining the issue and the repair. Nice work.
If you have not I would suggest adding Mini to your keywords in the video. I had to replace the BST in my first 2006 R53 Mini Cooper S. I searched and struggled at the time (2019) for information. This video would have saved me time and money.
Thanks very much for your comments! I’ll check the tags and description as you suggest, maybe some Mini owners will find the video and it will help them! 👍
Can the terminals in the boot floor were the bst cable and the other positive cable bolt to be replaced could i ask ur advice wat are those terminals called thank would apreciate any help great wee video
Hi David, sorry, I had a look but couldn’t find what they are called. I checked the parts diagrams on “RealOEM” too and couldn’t find it. You might need to post the question on an enthusiasts forum. Thanks, Phil
Any advice on how to pry the cable out of the bat on the replacement? Found on I tripped at the junkyard but can’t get the old cable out to connect mine!
Hi, to separate the two parts of the cable at the BST, you have to pry open the black plastic housing (which I assume you've done already) and then you need to lever the two sections apart. 04:45 in the video shows this, you may need to lever at different positions all around the edges. I kept the original positive cable from the BST to the car and just replaced the clamp and BST part where it goes onto the battery. Hope that helps! Cheers, Phil
Hi pal thank you for the great video. I had a small accident yesteray to the front drivers side. After this i was able to start up the car again and get home, but the next day it doesnt want to start. Could replacing this resolve the issue?
That's a strange one because if the BST has blown, normally the car won't start at all. However, it would be the first thing that I would check! I would defo do the check that I show at 1:21 in the vid! Thanks, Phil
That BST terminal connection looks very loose, you can accidentally disconnect it if you are pulling red wires.
The black ignition wire broke off and now I can only jump start the car, I have a new bst in
After i change negative cabel for my x5 e70 i get check engine.can you explain why .tkx
Sorry, I’ve never heard of that issue! But, if the check engine light is on, there must be a code. First step will be reading the code to see what the ECU is saying the problem is. If you don’t have one already, I recommend a C110+ (for BMW), you can find them on Amazon, eBay etc. thanks, Phil
Revive,this work event if you don’t repair the damage to the car for the accident?.thanks in advance for your response
Hi @romero10374 In theory, the event that triggered your BST was a one off event (impact) that was detected by the sensors. Therefore, you should be ok to fit a new BST and it will only trigger again if there is another "event", so yes, you should be ok to do this. Note that I said should a few times, I've never tried this! 😀 Later on, if you decide to do some repairs (hammering, removing panels etc), it's a good idea to disconnect the battery to prevent a false trigger. Hope this helps. Thanks, Phil
What did u mean at the end the risk of blowing it if u air bag light is on while u replaced it... should i clear the code and then shut the car off disconnect and replace?
Yes, I think it's important to make sure that the original trigger resolved and cleared. So, for example, if you had a minor bump and it blew the BST (or triggered and airbag), check the fault codes with a decent OBD scanner to make sure the original fault is cleared. Of course, the BST itself won't clear until you replace it but there shouldn't be anything else showing on the SRS system. This isn't a huge risk as normally airbag & bst triggering is a momentary detection (that isn't permanent) from the sensors. Hope that helps! Thanks, Phil
Hello, thanks for all these info !
I've 15 320i been in front end collision airbags lights are on and a drivetrain malfunction error with code P15ED, do you think I've to replace the bst ?
Hi, there's a good chance that it will have triggered but here's how to be 100% 1) Symptoms: Normally, if this has happened, the ignition will turn on but the car won't start, even if the battery is fully charged. 2) Check out the video again at 01:22 it is possible to check visually and by wiggling the positive battery cable if the BST has blown. Hope this helps! If you have other questions, please ask, I'll help if I can! 👍
@@ReviveMyRide the car starts okay the bst is different than yours it's a square I can not see any damage it has airbag connector going to it.
@@idrischabat5234 hi, it sound like your car has a slightly different type to mine but the purpose of the device is to cut electrical power to the engine in the event of an accident. As the car still starts ok, it looks like your BST is ok. Only going on my own experience where my car refused to start after an accident due to the BST triggering. Thanks, Phil
@@ReviveMyRide no worries thank you very much
Hello friend, quick update
The BST on my car is actually on the negative terminal !
I bought a 2008 bmw 650i and it didn’t come with the sensor’ I try to replace the cables with new sensor but wasn’t the same ‘ I looked to some other videos and I can’t see to find if my car has a sensor or not can u pls help me ‘
Hi, I would have thought that your car would have a battery safety terminal as standard but if it doesn’t, I don’t think it is a big problem. The video is aimed at people that do have a BST and it is preventing their car from operating properly. If your car starts and runs ok, I’m not sure I would try to retrofit a BST into it. Hope that helps. Thanks, Phil
Do I have to clear any codes for this to work ?
I'm not 100% sure tbh. Because I had the equipment to do so, I went and cleared the code straight away. Sometimes, just correcting the fault is enough, the item will start working (In this case the BST) and the code will sit in the background unless cleared (which is no big deal). Other times, the code needs to be cleared for the system to start working again. If I was going to guess based on my prior experience, I would say that you need to clear the code. This can easily be done with a BMW specific fault code reader: czcams.com/video/Xk5AtAtoV_k/video.html or with a cable and software on a laptop: czcams.com/video/Fkon2rxijs0/video.html Hope that helps! Phil
If you replace the BST and the car still has persistent airbag light on due to being in accident, will the BST blow again? Or do you have to fix all the airbags before you can replace BST?
Hi that’s a good question! In my situation, the car had been all fixed and I just had the BST to do. In theory, it is the “trigger” of the event that sets off the airbag & BST not the airbag light / fault code. So, as long as you don’t get another trigger event, then you should be ok to replace the BST even if the airbag light is ok. However, please get a second opinion, as I haven’t had the exact situation your described, any friendly car body shop should be able to answer. Thanks, Phil
Check the seatbelt tensioners! These have to be replaced after a crash.
Can you disconnect the air bag trigger wire afterwards?
Hi, not sure how I showed it in the video without watching back but I always prefer to disconnect the battery first (usually negative lead first) before unplugging an airbag connection. Hope that helps!
@@ReviveMyRide I mean keep the airbag wire off, and just use a straight battery cable?
@@fedorov5549 Hi, yes, initially as a "temporary fix" I opened up the BST cover (as shown in the video), cleaned up and pushed the battery terminal connections back together again and then drilled a small hole in the metal clamp so that i could put a self tapping screw in to hold it together (although tbh it is a tight fit, so would probably just stay together on its own). And then, as you suggested, I unplugged the airbag wire. However please note: Your entire airbag system may not work and in the event of an accident, your battery will not automatically disconnect. I weighed up both of these things but I also have some older cars that don't have airbags or battery disconnects, so I was often driving in exactly this type of circumstance anyway! Just be mindful of other passengers that you may have in the vehicle, you could be comfortable and aware of the risks, but they may / would not be? Hope this helps! Phil
good night
I saw your video
and I did the same
I bought the used Ibay cable, I installed it in the same way as you indicate.
but I put the scanner in and it deletes the witness
but it immediately turns on again
at the time of sending the cooper
what am I doing wrong
I need help
you could remove the witness
What I can do?
thanks for your videos
all the best
jaime perez
Hi, By "witness" I think you mean the fault code? And your problem is that it won't clear even after you fix the BST. First, please double check that the fault code you are trying to clear is for the BST, it should say something like "Safety Battery Terminal" and not some other problem on the car. If your fault code is for the safety battery terminal and it won't clear, even with a new BST installed, then the most likely cause is that the wiring is different on the connector as shown at 05:02 in the video or it isn't plugged in properly. btw, here is a video on how to clear the fault if it helps you: czcams.com/video/Fkon2rxijs0/video.html Hope that helps! Thanks, Phil
@@ReviveMyRide Good afternoon
Thank you very much for answering
If it is a battery failure
And if it was changed and the airbag warning light is not removed
I will check everything again
and connections
I hope it can be resolved
I inform you
Again, thank you very much
my best wishes
James
@@jaimegpppz3552 Hope it all goes well! 👍
good thank you very much
Well, I cleaned everything, corrected things 3 times and the code is not deleted.
I think the cable I bought doesn't work
I will keep trying to solve it
thank you so much
my best wishes
@@jaimegpppz3552 Sorry I can't help more, it's difficult to advise without being there. I hope you get it sorted... Thanks, Phil
07 bmw bst cable different same thing tho
Yeah, there are a lot of slight differences across the BMW models and years of manufacture. I think the basic principle stays the same though... Thanks, Phil
Where can I find the part?!
@jayserna1989 That's the tricky part! BMW (pretty much in acknowledgment of the issue) sell kits for most of their models but they are expensive! In the video, I try to show you have to get a good result for less money. So what you need to do is take a picture of your BST, then go up to your computer and search for BMW BST / battery safety terminal on Ebay. Sift through the results and look for one that looks like yours. Maybe initially include your exact model in the search, for example: BMW 3 series E46 BST and maybe you''ll get lucky and find one exactly the same as yours. Take note of the small (usually yellow) electrical plug that connects to the BST from your car, these do change in design across models and it is a lot easier if you buy a replacement BST that has the exact same plug. Hope that helps! Thanks, Phil
Hey man I have a 2014 bmw 320i and the front charge terminal under the hood that red wire melted and just has the wires exposed and the wires look corroded, I have the money to replace it I just would like to know what is causing it to melt
Hi, sorry for the slow reply! Just away for a cheeky holiday 😉 There are quite a few things that can cause that. No.1 is a poor connection where the red wire is bolted down: if it is loose or if there is any corrosion at all then there can be more electrical resistance, which leads to heat. That is what I would check first. It may not be easy to tell now that it is melted but when fitting the new one, ensure the terminal is super clean and nipped up tight. Worth checking all other electrical mounting points in the area positive and negative (because a poor earth can also cause the problem, even though it isn’t the earth cable that has melted). Hope that helps! Thanks, Phil
My BST cable won't budge I had an accident got hit on the front passenger side of course the bags deployed and all. The car just clicks loudly in fact the click is so loud and strong you can feel it in the car. My starter won't engage.
Hi, can I ask, have you levered the cover off of the BST? Once you have done that, you can usually see two plastic tabs that are preventing you from sliding the cable back into the BST. You can actually lift the end of the cable out past the tabs and then slide it back into its original position. Hope that helps! Thanks, Phil
@@ReviveMyRide Oh I had already got it started since that comment was put up. The cable was loose it's was just very stiff my car can start up again. Thanks for the outstanding video!
@Abundance Of Joy Glad you got it sorted! 👍
Got the same problem though it didn’t start with me
can i just get rid of the battery safety terminal cable n just run a cable w no BST?.. almost had a deadly crash when this bst turned my car off at night in a snow storm...this bst is a dangerous component...
Yes, you can just connect direct to the battery. Another downside of the BST is that if you have a minor bump or hit a curb, it can trigger and if you stop the car, it won't start again! A lot of modern cars don't even have a BST but of course, it is a safety feature, so it's down to personal choice.
thank u very much i drilled it n installed a sheet metal screw,,,
@@ReviveMyRide
@@ReviveMyRide u should do a video how to swap out that bst cable for a non bst cable..thank u
@@1955porsche That'll do it! 👍
You need to fix your earth battery connection.
@tam1381 Ha ha, well spotted! 👍 There's always someone out there with eagle eyes 👀Yes, it's on my to-do list!
I made a permanent “temporary repair” after getting a $700 charge for towing an otherwise drivable car after a minor fender bender.
Fool me once!
Yeah, it's crazy isn't it? Towing is really expensive and sometimes a very small bump can render your car undriveable and of course, if you haven't come across the problem before then you've no idea what the issue is! For me, the car was getting towed anyway but then the bodyshop didn't know what the problem was. I had to go fix it myself but by then, they had fitted a new battery, which cost me. They wouldn't acknowledge that the BST had been the problem all along.
It is ridiculous that they made this part and didn't care enough to make it something easily replaceable and their replacement bmw sells is clearly an after thought
Agree!, a bit shocking from BMW tbh! Cheers, Phil