Alternator and Battery test ok but voltage problem exists still
Thread Starter
Junior Member
Joined: Apr 2018
Posts: 28
Likes: 2
From: Albuquerque, NM
2011 C63 AMG R.I.P Replaced with 2014 C63 507 Edition.
Alternator and Battery test ok but voltage problem exists still
Ok so I been having a plaguing electrical issue that has became a real pain the rear. I took my car to the dealership where I bought it 2 months ago to have it checked out. I been having electrical issues where the car wont start and loses all power. I just replaced the voltage regulator as well and still having issues. I charged the battery fully last night before I took it to the dealership. They checked my battery and it was fully charged but wasn't being charged by the alternator. They then checked the alternator at the alternator and it was in spec putting out the correct voltage. They called me and told me the battery checks out ok and so does the alternator so the problem lies somewhere between the two. Has anyone else experienced this issue? Is this a common problem with this model? Does anyone know what could possibly be causing this issues? Any help would be greatly appreciated. Thanks for any help.
MBWorld Fanatic!
Joined: May 2018
Posts: 6,635
Likes: 6,581
From: Jakarta-Indonesia
2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Try this first and let me know the values of voltage and current https://mbworld.org/forums/c63-amg-w...ml#post7500855
good luck
good luck
MBWorld Fanatic!
Joined: Sep 2016
Posts: 1,175
Likes: 130
From: NY
2010 C63 2019 GLA45
This is a good idea.
Now the dealership where the OP bought the car: what kind of dealership is this?
Used car dealership, or Mercedes?
If they're a generic used car dealership, they won't have a Mercedes Xentry rig to test all the systems properly and will have to take guesses.
Now the dealership where the OP bought the car: what kind of dealership is this?
Used car dealership, or Mercedes?
If they're a generic used car dealership, they won't have a Mercedes Xentry rig to test all the systems properly and will have to take guesses.
MBWorld Fanatic!
Joined: Oct 2007
Posts: 2,306
Likes: 381
From: Texas
10 C six trizzle
need more details. Saying the car doesnt start sometimes and expecting real help isnt going to happen. Lay it all out no matter what seems useless. What are the conditions - does it sit 5 minutes and need jumped, or sit over night. When did it start happening? How long have you owned the car? Has the car had any body work or other previous repairs recently? Throwing parts at it is going to get expensive real fast this isnt a chevy. What exactly is the car doing? The charging system is pretty complex on these, not to mention the battery management that is supposed to keep the battery from draining when turned off.
