Car sat in garage for 2 weeks and battery was dead tonight.
No parking lights were left on and that is the only equipment that would drain the battery that I know of.
Since I have to go in the garage at night I saw no lights on.
Ipod was plugged in the glove box but with the car off it was black.
How long does the car have to run to charge the battery? Took it for a ride for 25 minutes. Left it running in the driveway for now.
I guess I have to back it into the garage for tonight until I gain some confidence. (need jumper cables in the trunk on a new 50+k car. Now that's funny?
My point is that, unless you were in the garage the very first night after parking the car, the battery may have worn down during the first night and the car would be dark from then forward.
Interested to hear the final outcome.
Results:
541011 Short Test Perfomed
541010 Test Program - After Short Test, Perform 220 ONTHANK
540000 Coded After Blow Out
5435 DC - 083405908 Checked for faults , None Found at this time.
Deactivated Afterblow Feature and let car sit for 4 hours. Battery voltage stayed the same at 11.8 volts and back light cluster did not come on.
Performed open campaign 5435 DC-57900317
Campaign 026840 Left and Right under floor paneling fasteners
Last edited by wheels777; Jul 2, 2010 at 08:52 PM.
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No Smartkey.
Car sat for 3-4 days. Battery Dead again in Garage.
Called Road Side. Dealer found no draws or drains on the battery. Tested the battery with the hand held device and found nothing wrong with the battery.
Checked for all codes found below voltage on 2 occasions where the system records the mileage on the car.
Dealer replaced battery.
http://www.benzworld.org/forums/w212...2010-e350.html
http://www.benzworld.org/forums/w212...d-battery.html
May be becoming a known issue.
.

Car sat for 3-4 days. Battery Dead again in Garage.
Called Road Side. Dealer found no draws or drains on the battery. Tested the battery with the hand held device and found nothing wrong with the battery.
Checked for all codes found below voltage on 2 occasions where the system records the mileage on the car.
Dealer replaced battery.
May be becoming a known issue.
.
There are some interior lights issues but I thought this was not that.
It does not help a lot to measure quiescent current once the battery has gone flat. It does not harm but typically the issue is from a control unit and it goes away when the control unit is reset. The control unit gets reset from no power, which is the case after a flat battery.
What gives? I need a jumper box in my trunk for a Mercedes.
Car Not starting, Now that gives one pause and a total lack of confidence.
The dealer did give me the buttons to press on the steering controls to give me the on board Voltage and Amp readings for the alternator charging the battery. If one scrolls it also will provide serial numbers, software versions and etc.
So what’s going on now? Cutting cost and start battery?
So if your car is front first in the garage you have to have a jump box or be inventive.

I don't think SBC is stupid here but you are right, the AUX battery is there for the SBC brakes on a W211 pre-facelift car.
The W212 (with a column shifter) actually has a backup battery for the gear shifter and you can put the gear to N even if the main battery was flat (looks like we were talking about two batteries on a W212 too but this backup battery is a very small battery, a lot smaller than the SBC battery on a W211 which is why it is usually not counted as a second battery at all).
The W212 (with a column shifter) actually has a backup battery for the gear shifter and you can put the gear to N even if the main battery was flat (looks like we were talking about two batteries on a W212 too but this backup battery is a very small battery, a lot smaller than the SBC battery on a W211 which is why it is usually not counted as a second battery at all).
Let me re-phrase, The MB Dealer told me that "the car will not come out of park with a dead battery" and I was foolish enough to believe the MB dealer who has the franchise and is trained in product knowledge and technical matters. This is a fact!
When the battery was dead with key in position I tried to place the car in neutral and nothing happened.
I will read the owners manual more thoroughly to see how it instructs one with a Dead Battery to place the car in neutral.
On the day the battery was dead I was in somewhat of a rush to get the problem resolved and only did a cursory review of the manual for this issue and did not see the instructions easily found, IMO.
Re SBC, had it in my 05 E320 4M and found it totally trouble free and providing excellent braking. Better than my 2010 E350 4M even though the brakes on my E350 are very very adequate.










