When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
BAS, ESP, ABS, AC Blower, Engine Fan, mirror controls, front locks, soft close BROKEN
W221 S550
BAS, ESP, ABS unavailable, AC Blower, Engine Fan, mirror controls, front locks, soft close are all not working. Can't take it to a mechanic coz it overheats due to no fan. Checked all the fuses in all 4 fuse boxes. Please help. *Note: Dumbass mechanic once plugged in battery with reversed terminals. Could it be one of the SAM units? If so, which one.
Model year? By all fuse boxes were front pre-fuse & power supply included. All fine, given your situation you have no choice but to get dealer involved for tow & to pull fault codes.
Model year? By all fuse boxes were front pre-fuse & power supply included. All fine, given your situation you have no choice but to get dealer involved for tow & to pull fault codes.
this is my engine bay. it varies from the image. Cant find the prefuse.
Model year? By all fuse boxes were front pre-fuse & power supply included. All fine, given your situation you have no choice but to get dealer involved for tow & to pull fault codes.
Model year? By all fuse boxes were front pre-fuse & power supply included. All fine, given your situation you have no choice but to get dealer involved for tow & to pull fault codes.
Never mind. found it. all the fuses are good. just lost rear driver side soft close and lock, this was good before. also lost radio which was fine. it seems like im losing all electronics slowly. all fuses are good.
It could certainly be the front SAM. Did the polarity reversal happen immediately before the onset of symptoms? If not, it's probably unrelated.
Yep. pretty much immediately. I hear the SAM needs to be programmed by the dealer when replaced. Is there an alternative way where I dont have to get the dealer involved? Thanks for all the help by the way guys. really appreciate it.
Yep. pretty much immediately. I hear the SAM needs to be programmed by the dealer when replaced. Is there an alternative way where I dont have to get the dealer involved? Thanks for all the help by the way guys. really appreciate it.
You'll need a dealer or an indie with the ability to do the coding. If you can find a competent tinkerer it's worth pulling the SAM and opening it up. There are some high-current fuses (100A and so) that are replaceable if you know what you're doing. The dealer won't sell these fuses but they're fairly standard industrial parts. With luck, it could be something like this:
You'll need a dealer or an indie with the ability to do the coding. If you can find a competent tinkerer it's worth pulling the SAM and opening it up. There are some high-current fuses (100A and so) that are replaceable if you know what you're doing. The dealer won't sell these fuses but they're fairly standard industrial parts. With luck, it could be something like this: https://www.youtube.com/watch?v=W2NbMdtKHvU
On the other hand, the PC board can be fried.
Thanks brother. Im pretty sure thats the prefuse module but il give it one last shot before limping at 40mph with overheating issues it to an indie.
06-23-2019, 03:44 AM
