Electrical Failure

babybenz190e · 11-19-2008, 10:56 AM

Hey all,
Ive searched the forums and couldnt find anything related. I was driving home today, and suddenly all the electrical components of the car went out IE Turn signals, headlights, radio, climate fan etc. Then When I was pulling into my driveway the engine died (fuel pump due to elec. prob?). I tried cycling the key back and forth, and the warning lights came up as usual, but when i turn the key to start, it just takes a draw on the electrical system with no turning over of the engine... any ideas of what could be the problem?

One thing that seemed to lead up to this was yesterday, the fan inside the car wouldnt suddenly click off, even when it was set to high...

Thanks...
Cory

MTI · 11-19-2008, 12:51 PM

1) Battery
2) Alternator/Voltage Regulator

After those items, it could be (not likely though) a ground failure.

Evan_16vw201 · 11-19-2008, 07:30 PM

Check for corrosion on the battery terminals as well. Something as simply as this can cause havok on the electrical system.

sun111 · 12-03-2008, 09:38 PM

basics, sepentine belt, bad battery, overload protection relay fuse

E=MC^2 · 12-05-2008, 12:23 AM

i had a weird electrical problem like this too i disconnected and reconnected the battery all was well after that i still havent found the cause... sorry

MB190-DK · 12-22-2008, 07:49 AM

I had the same problem 1 month ago. First time, they found that the battery was dead and it was replaced. But after driving 40 km´s it happened again - exactly the same symptoms. So the generator was replaced, and everything is ok now.

First I didn´t understand why the battery-lamp didn´t light up both of the times.

The reason, he explained, was that an error in the generator lead the power to the ground and not to the battery. The first time, the battery went down because it was to old and couldn´t stand the stress and died. The second time the battery was just flat and not dead, but the error with the generator made the car use all of the power from the battery instead of from the generator when driving.

11-19-2008, 10:56 AM	#1
babybenz190e Newbie Join Date: Jun 2008 Location: Indianapolis, IN Posts: 5	Electrical Failure Hey all, Ive searched the forums and couldnt find anything related. I was driving home today, and suddenly all the electrical components of the car went out IE Turn signals, headlights, radio, climate fan etc. Then When I was pulling into my driveway the engine died (fuel pump due to elec. prob?). I tried cycling the key back and forth, and the warning lights came up as usual, but when i turn the key to start, it just takes a draw on the electrical system with no turning over of the engine... any ideas of what could be the problem? One thing that seemed to lead up to this was yesterday, the fan inside the car wouldnt suddenly click off, even when it was set to high... Thanks... Cory

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11-19-2008, 12:51 PM	#2
MTI MBWorld Fanatic! Join Date: Dec 2002 Location: Honolulu, Hawaii Posts: 2,596	1) Battery 2) Alternator/Voltage Regulator After those items, it could be (not likely though) a ground failure.

11-19-2008, 07:30 PM	#3
Evan_16vw201 Almost a Member! Join Date: Aug 2007 Posts: 32	Check for corrosion on the battery terminals as well. Something as simply as this can cause havok on the electrical system.

12-03-2008, 09:38 PM	#4
sun111 Almost a Member! Join Date: Apr 2008 Posts: 34	basics, sepentine belt, bad battery, overload protection relay fuse

12-05-2008, 12:23 AM	#5
E=MC^2 Almost a Member! Join Date: Aug 2007 Location: st. paul minnesnowda Posts: 50	i had a weird electrical problem like this too i disconnected and reconnected the battery all was well after that i still havent found the cause... sorry

12-22-2008, 07:49 AM	#6
MB190-DK Newbie Join Date: Dec 2008 Location: Copenhagen, Denmark Posts: 2	I had the same problem 1 month ago. First time, they found that the battery was dead and it was replaced. But after driving 40 km´s it happened again - exactly the same symptoms. So the generator was replaced, and everything is ok now. First I didn´t understand why the battery-lamp didn´t light up both of the times. The reason, he explained, was that an error in the generator lead the power to the ground and not to the battery. The first time, the battery went down because it was to old and couldn´t stand the stress and died. The second time the battery was just flat and not dead, but the error with the generator made the car use all of the power from the battery instead of from the generator when driving.