lordgaz
Senior Member
- Joined
- Dec 8, 2015
- Messages
- 316
- Reaction score
- 66
- Location
- Herefordshire UK
- Your Mercedes
- W220 S-Class S55 AMG 2000 / W220 S-Class S55K AMG 2003 / W163 ML270 / Jaguar XJR X350
Hi All - Our S320 3.2 petrol 2002 went off for some new parts at the local garage.. It was there a while, and when we picked it up, the battery was only just strong enough to start it.
At home, it sat for a while (3rd utility car) and the battery was totally flat when I came to start it.
To get into the boot, I applied power over the front 40A fuse in the front right (drivers side) fuse box and earth and boot was able to be accessed (adding a new battery as the old one would not hold charge) - However, when I tried to start the car with the fresh battery, nothing happened (except for the fan spinning wildly) - Further investigation with a diagnostic scanner (MB-2) shows it cannot connect to the ECU -
Could I have disturbed a connection in the fuse box (I did at first unclip the fuse carrier from the zinc clip at the front of the box when I was trying to find a positive+ power point which was before I read about using the 40A front fuse) - Where is the ECU? is it on the same side as the fuses?
Bit worried - think I may have fried something? or hopefully disturbed an important connection on the fuse carrier? -
At home, it sat for a while (3rd utility car) and the battery was totally flat when I came to start it.
To get into the boot, I applied power over the front 40A fuse in the front right (drivers side) fuse box and earth and boot was able to be accessed (adding a new battery as the old one would not hold charge) - However, when I tried to start the car with the fresh battery, nothing happened (except for the fan spinning wildly) - Further investigation with a diagnostic scanner (MB-2) shows it cannot connect to the ECU -
Could I have disturbed a connection in the fuse box (I did at first unclip the fuse carrier from the zinc clip at the front of the box when I was trying to find a positive+ power point which was before I read about using the 40A front fuse) - Where is the ECU? is it on the same side as the fuses?
Bit worried - think I may have fried something? or hopefully disturbed an important connection on the fuse carrier? -