electrical?
Thread Starter
Newbie
Joined: Sep 2007
Posts: 6
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2002 cl500
electrical?
First, My battery died b/c i left the lights on.
i charged the battery but then the ignition wouldnt switch or turn at all.
went and bought a brand new battery and the battery was good
for a couple of days (2-3) and then the brand new battery died.
any advice what this problem could be and why would it effect
the ignition from turning at all?
i charged the battery but then the ignition wouldnt switch or turn at all.
went and bought a brand new battery and the battery was good
for a couple of days (2-3) and then the brand new battery died.
any advice what this problem could be and why would it effect
the ignition from turning at all?
Member
Joined: Jan 2006
Posts: 159
Likes: 0
From: MD
First, My battery died b/c i left the lights on.
i charged the battery but then the ignition wouldnt switch or turn at all.
went and bought a brand new battery and the battery was good
for a couple of days (2-3) and then the brand new battery died.
any advice what this problem could be and why would it effect
the ignition from turning at all?
i charged the battery but then the ignition wouldnt switch or turn at all.
went and bought a brand new battery and the battery was good
for a couple of days (2-3) and then the brand new battery died.
any advice what this problem could be and why would it effect
the ignition from turning at all?
These SAMs are a common weak point in the MB electrical system. They are often damaged/fried through voltage spikes and/or voltage irregularities. If you attempted to recharge your dead battery while still connected to your car, I can see a voltage spike/irregularity, due to the recharger, frying a SAM.
You could have also sent a spike through the system upon reinstalling another battery. As stated above, these SAMs are not as reliable as they should be.
The net effect of a fried SAM is that some of your electrical components are not powering down, thus excessively draining the battery. Just as your noticing, a brand new or fully charged battery only lasts 2/3 days tops.
I discovered all of this when trying to diagnose the same problem in my own CL600. My CL had just come back from the stealership upon addressing the cluster recall when I starting experiencing this problem. Hopefully, you have a warranty, preferably Starmark, and it will cost nothing for your local stealership to fix.
I would inform your SA to have both SAM modules checked. I recommend this b/c MB technicians have a difficult time correctly diagnosing SAM failure in a one visit attempt.
Last edited by lexlyf; Sep 26, 2007 at 12:11 AM.
