Thanks for the great video. Very helpful and informative. I believe I have the same problem now with my 2015 Golf Sportwagen TDI. It's in the dealership now having the heater core hoses replaced.
Ended up mine was a failed water pump. So I just finished replacing the timing belt and water pump yesterday. Now I have a p2456 code, which apparently quite a few people run into this after changing the water pump and timing belt for some reason. I'm still researching the case and solution.
@@gregnak07 The differential pressure sensor was either plugged or had failed. I believe build up in the hose plugged the sensor after removing it and replacing it for the timing belt replacement. The dealership said they would fix it but needed time to get a loaner ready. I told them I had read of other people with the same problem had their sensors melt down. They didn't believe me and told me it was okay to drive until the appointment. On the way to work one day it went into limp mode. I limped it to the dealership and they replaced the melted sensor and wiring harness under the diesel gate warranty.
Thank you sir. I'll be checking this because it seems to be where it's coming from. I could see and smell the coolant burning from the back side of the engine
I feel like my problem matched youe description but i overfilled the resevoir accidentally and now it barely holds coolant, got some blue devil to see if it helps but not sure if thats the right call. Plus not sure where to put it as it directs me to put it directly into the radiator.
If you were trying to diagnose, would it be possible to run the car without the heating on, and then run the car with the heater on to see if there is a difference in leakage? or is the leak only dependent on engine RPM?
Hi I'm commenting on a video that you made on a exhaust particulate filter on the TDI, you did not leave room for comments just wondering did that work and did it take away the p2002 code I know it's not related to this video but you didn't allow questions and I just need to know because I have a similar code thank you for going through the trouble to showing us how to do this really appreciate it
Think mine is leaking from the same position. Been in the garage 3 times now but they can’t find the leak. Lost heating in the cabin also. So today I flushed out the heater core and lots of crude came out. If my coolant drops again I will investigate, to see if mine is doing the same as yours.
They should be able to put in the radiator an inferred dye, let it run for about 15 minutes after it has come up to temp and coolant is flowing. Then using an inferred flashlight in low light they should be able to detect exactly where the leak is.
I keep adding coolant to the reservoir tank and it goes out the tank to radiator but radiator keeps spitting it back out...car temperature gauge is reading in the middle car isn’t over heating idk 😢
@@shockinshay probably burning coolant so open the oil cap and see if you find any milky residue. If you do it means theres coolant mixing with your oil 😬. If the smoke if slightly blue then its probably burning oil. In the winter though you can get white smoke from water vapour as a result of combustion just like your breath is a bit white. Lots of white smoke is bad
I put coolant in mines and it just goes down instantly when I turn car off the fan still runs I guess to cool the motor down from running hot anyone knows anything ? And it’s a diesel
This failure is likely caused by a plugged heater core. It is a common problem on the Passat TDI and should be covered under VW TDI extended emissions warranty.
static.nhtsa.gov/odi/tsbs/2019/MC-10168357-0001.pdf Mine is at dealer now getting heater core, melted fitting and EGR cooler replaced under warranty. It wasn’t easy but I was persistent.
I'm sorry I can't remember the name of that hose but if you remove it and bring it to AutoZone or any auto parts place they can match it up you might have to cut the one that they give you to make it work
Peak brands has it listed on bottle. I have a 2012 and there are 2 types that I have seen there's a pink capped bottle and Purple capped bottle. The PINK is up to 2007- 2011 and the Purple Capped bottle is 2012 -2016. Pay attention. Read the bottle label. It's on the front of the bottle. I know this because I have a 2007 2.5 rabbit and it takes the PINK cap. I also have a 2012 TDI and it takes the PURPLE capped bottle.
I don't recommend driving it unless you keep a very close eye on the coolant level because if the coolant gets too low it will blow the head gaskets and then Warp the head which can come up to several thousand dollars just for the parts
@@idennis75 i ended up trading the car in, not because the fix was too hard, but I had to go the dealer and ended up leveling up my ride! Thanks for your response.
I am lejet having the same problem i will run my car vw passt and with in 4 miles its out of coolent even if i fill it ima check. That because the mechanic is saying its gonna cost me a 1000 dollers idk about all that
Thanks for the great video. Very helpful and informative. I believe I have the same problem now with my 2015 Golf Sportwagen TDI. It's in the dealership now having the heater core hoses replaced.
Thanks for sharing the knowledge my friend. Great info.
Wow, thanks for the info from you and everybody else who commented. I'll be calling the dealership tomorrow to see about this.
Ended up mine was a failed water pump. So I just finished replacing the timing belt and water pump yesterday. Now I have a p2456 code, which apparently quite a few people run into this after changing the water pump and timing belt for some reason. I'm still researching the case and solution.
@@huntidan1776 any update
@@gregnak07 The differential pressure sensor was either plugged or had failed. I believe build up in the hose plugged the sensor after removing it and replacing it for the timing belt replacement.
The dealership said they would fix it but needed time to get a loaner ready. I told them I had read of other people with the same problem had their sensors melt down. They didn't believe me and told me it was okay to drive until the appointment.
On the way to work one day it went into limp mode. I limped it to the dealership and they replaced the melted sensor and wiring harness under the diesel gate warranty.
Thank you sir. I'll be checking this because it seems to be where it's coming from. I could see and smell the coolant burning from the back side of the engine
Thanks for filming! I pulled the belly pan and pretty sure I have the same issue.
Can you just bypass it?
excellent video
I feel like my problem matched youe description but i overfilled the resevoir accidentally and now it barely holds coolant, got some blue devil to see if it helps but not sure if thats the right call. Plus not sure where to put it as it directs me to put it directly into the radiator.
Thanks for video!
Good video. Good info
If you were trying to diagnose, would it be possible to run the car without the heating on, and then run the car with the heater on to see if there is a difference in leakage? or is the leak only dependent on engine RPM?
Hi I'm commenting on a video that you made on a exhaust particulate filter on the TDI, you did not leave room for comments just wondering did that work and did it take away the p2002 code I know it's not related to this video but you didn't allow questions and I just need to know because I have a similar code thank you for going through the trouble to showing us how to do this really appreciate it
About how long does it take to do this job?
Think mine is leaking from the same position. Been in the garage 3 times now but they can’t find the leak. Lost heating in the cabin also. So today I flushed out the heater core and lots of crude came out.
If my coolant drops again I will investigate, to see if mine is doing the same as yours.
They should be able to put in the radiator an inferred dye, let it run for about 15 minutes after it has come up to temp and coolant is flowing. Then using an inferred flashlight in low light they should be able to detect exactly where the leak is.
I keep adding coolant to the reservoir tank and it goes out the tank to radiator but radiator keeps spitting it back out...car temperature gauge is reading in the middle car isn’t over heating idk 😢
When you first start the car after sitting for a while does it Blow white smoke out
@@idennis75 mine blows white smoke. What does it mean?
@@shockinshay probably burning coolant so open the oil cap and see if you find any milky residue. If you do it means theres coolant mixing with your oil 😬. If the smoke if slightly blue then its probably burning oil. In the winter though you can get white smoke from water vapour as a result of combustion just like your breath is a bit white. Lots of white smoke is bad
I put coolant in mines and it just goes down instantly when I turn car off the fan still runs I guess to cool the motor down from running hot anyone knows anything ? And it’s a diesel
Can this issue cause coolant to get into the engine without the head gasket being blown?
No this is only in the cooling system
I having to take out the CV Axle to change a radiator hose ? Can anyone else confirm that?
This failure is likely caused by a plugged heater core. It is a common problem on the Passat TDI and should be covered under VW TDI extended emissions warranty.
Thanks
static.nhtsa.gov/odi/tsbs/2019/MC-10168357-0001.pdf
Mine is at dealer now getting heater core, melted fitting and EGR cooler replaced under warranty. It wasn’t easy but I was persistent.
Is there a mileage limit on the warranty? Mine is 2012 and having same issue
10 year, 162,509 miles. I read somewhere else 11 years. Call dealer with your VIN and ask the warranty status.
What is this pipe called what’s its part number I have same issue but I need to replace pipe. I don’t know what the pipe is or it’s part number?
I'm sorry I can't remember the name of that hose but if you remove it and bring it to AutoZone or any auto parts place they can match it up you might have to cut the one that they give you to make it work
Hello, I have a Passat TDI 2014. What type of Coolant do you put in yours?
Pink peak vw 2012-2018
Peak brands has it listed on bottle. I have a 2012 and there are 2 types that I have seen there's a pink capped bottle and Purple capped bottle. The PINK is up to 2007- 2011 and the Purple Capped bottle is 2012 -2016. Pay attention. Read the bottle label. It's on the front of the bottle. I know this because I have a 2007 2.5 rabbit and it takes the PINK cap. I also have a 2012 TDI and it takes the PURPLE capped bottle.
Where are you located? I need to bring my car to you
I Have stopped working on cars for now sorry about that
So can you still drive the vehicle?
I don't recommend driving it unless you keep a very close eye on the coolant level because if the coolant gets too low it will blow the head gaskets and then Warp the head which can come up to several thousand dollars just for the parts
How many jugs of coolant did you need?
About a gallon and a half or a little less so two bottles you need
@@idennis75 i ended up trading the car in, not because the fix was too hard, but I had to go the dealer and ended up leveling up my ride! Thanks for your response.
I am lejet having the same problem i will run my car vw passt and with in 4 miles its out of coolent even if i fill it ima check. That because the mechanic is saying its gonna cost me a 1000 dollers idk about all that
If the coolant puddle is in the back close to the firewall it is the same problem that's the only coolant line back there
Just replaced the radiator.
As an English person I can hardly understand what you're saying