stevieno12000
Member
Hi guys, I've been a member for a while and a long time reader. It's not very often I'm stumped but this car has got me now.
It's a 2005 '55' E280cdi (OM642) 7g tronic etc. Pre facelift. 192k miles
Over the last few weeks I've been tinkering and repairing/replacing parts, Turbo, cleaning EGR and inlet manifolds etc she's a good runner with plenty of life yet. Last Friday, after some seriously heavy rain, the engine wouldn't turn off and all manner of warnings appeared on the dash. I removed the fuse box and all wiring etc and found a row of corrosion above the sam unit seal. I cleaned this all off, re-installed and refitted the fuse box lid properly, the car has run perfectly since. Until an hour ago that is. There appeared a red flashing warning of Brake failure, depress pedal fully, and almost zero brake functionality. I pulled in, disconnected the battery for 30mins, checked there were no fluid leaks or shortage, no fuses blown, moisture in the fuse box area, absolutely nothing visible. Whenever I reconnect the battery the message appears immediately and I cannot move the gear lever from park.
There are some threads suggesting Sam failure, some suggesting it's a failed battery etc. Having seen the condition of my Sam unit just 5 days ago, I'm reluctant to believe it is this and given the cost of a battery for these cars I'm reluctant to buy one as a "let's just see if it works" solution.
Does anyone have any experience with this sort of thing? Solution?
Thanks in advance, Steven.
It's a 2005 '55' E280cdi (OM642) 7g tronic etc. Pre facelift. 192k miles
Over the last few weeks I've been tinkering and repairing/replacing parts, Turbo, cleaning EGR and inlet manifolds etc she's a good runner with plenty of life yet. Last Friday, after some seriously heavy rain, the engine wouldn't turn off and all manner of warnings appeared on the dash. I removed the fuse box and all wiring etc and found a row of corrosion above the sam unit seal. I cleaned this all off, re-installed and refitted the fuse box lid properly, the car has run perfectly since. Until an hour ago that is. There appeared a red flashing warning of Brake failure, depress pedal fully, and almost zero brake functionality. I pulled in, disconnected the battery for 30mins, checked there were no fluid leaks or shortage, no fuses blown, moisture in the fuse box area, absolutely nothing visible. Whenever I reconnect the battery the message appears immediately and I cannot move the gear lever from park.
There are some threads suggesting Sam failure, some suggesting it's a failed battery etc. Having seen the condition of my Sam unit just 5 days ago, I'm reluctant to believe it is this and given the cost of a battery for these cars I'm reluctant to buy one as a "let's just see if it works" solution.
Does anyone have any experience with this sort of thing? Solution?
Thanks in advance, Steven.