CLK55 no power
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Newbie
Joined: Jan 2020
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From: Oregon
2003 CLK55 AMG
CLK55 no power
Just bought this car from a buddy who hooked up the battery terminals backwards trying to get it going again.
back story car was running fine he took it home one day and parked it came out to a dead battery, jumped the car and it worked did this a few times until it just wouldn’t start. He put a new battery in and reversed the terminals now the car has no power and won’t start. Wondering what fuses I may need to replace or other damage that could have been done?
Any help in the diagnosis process would be greatly appreciated, I’m not familiar at all with these cars
back story car was running fine he took it home one day and parked it came out to a dead battery, jumped the car and it worked did this a few times until it just wouldn’t start. He put a new battery in and reversed the terminals now the car has no power and won’t start. Wondering what fuses I may need to replace or other damage that could have been done?
Any help in the diagnosis process would be greatly appreciated, I’m not familiar at all with these cars
Last edited by GregT94; Jan 12, 2020 at 02:48 AM.
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CLK 55 AMG
I had this problem when I first bought my 55, the previous owner had done the same thing. Mine was stick in limp mode however. If you have nothing at all I hate to say but he might have fried the ECU. Bet have it looked at.
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From: Oregon
2003 CLK55 AMG
You think even having power to the dash windows and radio working it could be one of those big main fuses?
im fearing that about the ecu just hopeful it could be something as simple as a fuse
im fearing that about the ecu just hopeful it could be something as simple as a fuse
Thread Starter
Newbie
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From: Oregon
2003 CLK55 AMG
The car won’t start no crank back windows don’t work all dash lights are functional radio works interior lights work the windows in the rear won’t seal up or come up or down but the fronts work fine as well as the sun roof
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Joined: Feb 2011
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From: Austin, TX
2006 E55, 2012 GLK350 & 1992 190e sportline
you are going to need to do some troubleshooting and reply back with what you did and the results if you want any more help.
Last edited by insame1; Feb 6, 2020 at 03:00 PM.
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Thread Starter
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Joined: Jan 2020
Posts: 14
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From: Oregon
2003 CLK55 AMG
I checked the fuses inside the positive jump terminal I checks the window fuses and fuses under the hood related to ecm (the ones on the driver side)
I’m not sure where else to start looking is there a way to test the ecm? Could it be battery related I haven’t had the battery load tested yet
I’m not sure where else to start looking is there a way to test the ecm? Could it be battery related I haven’t had the battery load tested yet
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Thread Starter
Newbie
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From: Oregon
2003 CLK55 AMG
Is there a way to diy test it before taking it to the dealer?
Thread Starter
Newbie
Joined: Jan 2020
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From: Oregon
2003 CLK55 AMG
Thread Starter
Newbie
Joined: Jan 2020
Posts: 14
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From: Oregon
2003 CLK55 AMG
Okay update on the car I replaced the battery still nothing, then I pulled the ecu and it had corrosion on it so I cleaned it with 99% alcohol and a toothbrush let it dry and re installed, car is now running and driving under its own power but throwing fault codes
P0103
P0221
P203A
p20D4
P203B
P2004
P0103
P0221
P203A
p20D4
P203B
P2004
