Parasitic battery drain? Alternator/battery?
Thread Starter
Member
Joined: Sep 2020
Posts: 164
Likes: 22
From: Seattle
2006 CLS55 AMG
Parasitic battery drain? Alternator/battery?
2 days ago, I came to my car after my shift at work was over and as soon as I started it, I noticed the cooled seats would not work. I thought that was weird so I tried the windows. Nothing. Then about 10 seconds later the cooled seats started working but still not the windows. I then realized I had a problem. Then, I shifted to Drive and took off, after about 10 feet my car had reduced power and revved high but barely moved. I parked again, and the red battery light came on. Had to have the car towed home. Next day, I replaced the battery but problem still persisted. And it wouldn't even shift out of drive and I had a christmas tree on my dashboard. Now, I tried to start it today and the key wouldn't even turn in the ignition. Battery completely dead. I am at a loss here, I believe something is draining the battery with my car off. HELP PLEASE. It's a 2007 E550 with 150k miles.
Thread Starter
Member
Joined: Sep 2020
Posts: 164
Likes: 22
From: Seattle
2006 CLS55 AMG
Thread Starter
Member
Joined: Sep 2020
Posts: 164
Likes: 22
From: Seattle
2006 CLS55 AMG
Figured out the problem. My voltage regulator and alternator both were shot. Installed a new alternator with the regulator and problem was fixed. My alternator was so bad that it was draining my battery overnight.
