Mercedes SL R230 Battery Control Module BCM Fault
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- Опубліковано 22 сер 2024
- This faulty BCM was resulting in the rear consumer battery to go flat after a couple of days, however no warning lights were appearing on the dash. On inspection there was a bad burning smell and I open the module to have a view inside
Another great video detailing a common problem with the R230. I have done a few battery drain videos but thankfully not had this issue...yet. Mike
Thanks 👍
Which screws need to be removed to extract the board from the box? All of them?
Mine was slightly worse than yours, i could smell that it was getting hot, so took it out asap.
Btw that smell stays around for days....
Yeah sometimes the smell is kind of nice but then it feels like it is hanging everywhere!!
Hi Dave - hope you are well. Do you still have this faulty BCM or any other faulty BCM's? I am thinking of doing a 'How BCM's work, what goes wrong with them and why they can catch fire video. Ideally, I need a sample faulty one. Let me know - hopefully you still have my mobile. Mike in Bristol
Thanks for the video. My starter battery has not been charging off the alternator for the last month. I replaced the 100A fuse, didn't work. Today, I put my boot in to service mode (to change a taillight bulb), then turned the car off and this started burning... I panicked and pulled the carpet up. Luckily the burning didn't spread outside the module. I have a question... Is there a way to bypass the K57 relay and remove the starter battery so that there is only 1 battery in the car, running everything?
Can you measure the size of the nine blue 470uf capacitors - 13mm x 25mm? I want to order them before I remove the BCM, these old caps can cause you SL to go up flames!
Is water the only reason for the damage?
These are going for well over $1000 USD now on eBay, used!
How can this be prevented?
Usually caused by damp getting into the boot. Mike
I have seen many a vehicle that has had a fire, there is plenty of talk of it on the Forums. Why hasn't there been a re-call for this? To prevent it? I couldn't say, so hard to predict when a piece of electronics is going to fail!
@@DavidSmithSL I just picked up my Pagoda from a guy who was using it in a film and he was telling me that his dads 500SL caught fire on the drive...and took out the jag next to it. I guess water and electrics just don't mix. Mike