W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Car won't start ... haven't driven in a week...culprit?

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Old Dec 11, 2011 | 08:51 AM
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Car won't start ... haven't driven in a week...culprit?

I haven't had a chance to drive the car in a week or so ... I went to start the car this morning, it won't start.

It cranks, but won't start.

The dash displays "Reduced braking power, start engine" in red font. The clock keeps going crazy too.



Culprit?
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Old Dec 11, 2011 | 09:08 AM
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3-five-five/ TUNDRA/ 07 997 cab
Thats a dead battery.
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Old Dec 11, 2011 | 09:46 AM
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^ That


When the battery gets low, all kinds of crazy **** happens. Throw a charger on, and you should be good to go.

Once it starts, you may get "convenience features disabled" message, but once you drive a couple of miles, both batteries will charge up and message will disappear.
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Old Dec 11, 2011 | 10:05 AM
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Would jumper cables work?
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Old Dec 11, 2011 | 10:10 AM
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Tell us what you mean "it cranks" how long?

If it turns over for a second or two, then stalls and throws red alarms then yes dead battery.
This condition low voltage can and will cause damage to your electrical system, so either recharge or get a new battery.
FWIW once a battery has been dead, it will never recover it's full potential, always better to get a new battery

Last edited by Yacht Master; Dec 11, 2011 at 10:19 AM.
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Old Dec 11, 2011 | 10:12 AM
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3-five-five/ TUNDRA/ 07 997 cab
It may crank, but if there is not enough juice, it wont start. Had the same issue with my 04. Put a new battery in and it was perfect. I would think even if you jump it, your still gonna need a battery.
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Old Dec 11, 2011 | 10:14 AM
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Originally Posted by Yacht Master
Tell us what you mean "it cranks" how long?
3-5 seconds...COMMAND says "Battery too low, start engine, otherwise COMMAND will shut down"


My trunk won't even pop open! How the hell am I going to do this!
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Old Dec 11, 2011 | 10:17 AM
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3-five-five/ TUNDRA/ 07 997 cab
There is a jump post under the hood. It is a positive terminal.
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Old Dec 11, 2011 | 10:22 AM
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Originally Posted by ArmoE55
3-5 seconds...COMMAND says "Battery too low, start engine, otherwise COMMAND will shut down"


My trunk won't even pop open! How the hell am I going to do this!
Use the metal key, it is inside of the key fob.

When and if you jump it, connect the cables and let the running car charge the dead battery for like 15 -20 minutes before you try to start it.

Last edited by Yacht Master; Dec 11, 2011 at 10:26 AM.
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Old Dec 11, 2011 | 10:55 AM
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As previously mentioned put a charger on the battery and let it sit for a few hours, it is VERY hard on your alternator if you jump the car and typically will contribute to reduced alternator life. If you battery is that low after only one week, I see a new battery in your future.
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Old Dec 11, 2011 | 11:07 AM
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Thanks for the tips guys!

Put a Black&Decker charger on and it's charging now...
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Old Dec 11, 2011 | 11:11 AM
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3-five-five/ TUNDRA/ 07 997 cab
Originally Posted by ArmoE55
Thanks for the tips guys!

Put a Black&Decker charger on and it's charging now...
Start looking for a battery though.
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Old Dec 11, 2011 | 11:16 AM
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Originally Posted by emoving
Start looking for a battery though.
Yes sir.

Any suggestions or whatever OEM is?
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Old Dec 11, 2011 | 11:24 AM
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Here is a good read from back in the day,

https://mbworld.org/forums/w211-amg/...w-battery.html
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Old Dec 11, 2011 | 11:27 AM
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3-five-five/ TUNDRA/ 07 997 cab
Originally Posted by ArmoE55
Yes sir.

Any suggestions or whatever OEM is?
I would buy factory and put it in myself. Thats just me though. I know most will point you to a aftermarket battery for cheaper, I just like stock MB stuff.
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Old Dec 11, 2011 | 11:39 AM
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Looks like Varta is the OEM battery, so I'll be purchasing one of those...and installing myself after reading the above thread! OUCH, 500 bucks for a battery change.

As always, thanks for the help fellas.
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