03 CL55 Electrical Issue
Thread Starter
Newbie
Joined: Apr 2025
Posts: 4
Likes: 0
From: Santa Barbara
2005 E55, 2003 CL55
03 CL55 Electrical Issue
Help, I have an 03 Cl55 having some major electrical issues. Currently, I have an ESP malfunction, ABC malfunction, ABS malfunction, and a BAC malfunction. None of my steering wheel buttons work as well as the row of buttons located next to the Hazard button. My doors do not lock however the key fob still sends a signal as the lights still flash whenever unlock/lock is pressed. Soft close is still enabled so ( would this mean that a faulty CAN module can be rulled out ?) and all of my windows still roll up. Im wondering if this issue is most likely due to a faulty PSE module or faulty vacuum lines, or something entirely different.
Also, my CL55 is currently sitting at 149,000 miles.
Any help is appreciated
Also, my CL55 is currently sitting at 149,000 miles.
Any help is appreciated
Member
Joined: May 2020
Posts: 247
Likes: 57
From: Fort Worth
2005 CL55 AMG || 2005 CL65 AMG || 1989 560SEC
agreed on the battery, seems like a ton of electrical issues, and these cars do NOT like weak batteries. After that, chase fuses I guess. Also get a code reader.
MBWorld Fanatic!
Joined: Oct 2019
Posts: 5,153
Likes: 1,767
From: Colorado
G550
If these problems began with your old battery, replacing the battery does not automatically clear all the faults. Use an OBD code reader to clear the codes. This can take several iterations because some error codes need to be cleared so that other codes can be cleared. Search the forum for relared threads.
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Member
Joined: May 2020
Posts: 247
Likes: 57
From: Fort Worth
2005 CL55 AMG || 2005 CL65 AMG || 1989 560SEC
Check the trunk on either side in the pits/depressions on either side. they fill with water if your trunk has a water leak... that killed the radio in my cl65, the radio module is in the bottom on the left side. Just bought a used module off ebay, plugged it in, and was back in business.
Windows/lock/unlock can be caused by the driver side door wiring, the wires rip over time in some cars in the black accordion section. Also the plugs that go into the drivers side door module may need cleaning. y'all are just going to have to do a lot of searching, but the answers are all in the forum somewhere. Have fun!
Windows/lock/unlock can be caused by the driver side door wiring, the wires rip over time in some cars in the black accordion section. Also the plugs that go into the drivers side door module may need cleaning. y'all are just going to have to do a lot of searching, but the answers are all in the forum somewhere. Have fun!
