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C32 AMG, C55 AMG (W203) 2001 - 2007

What is the voltage on your display?

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Old Nov 9, 2015 | 06:34 AM
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c55 amg
What is the voltage on your display?
When I select the voltage reading mode, I get the next values...

After cold start, charging voltage shows around 14.3
Than slowely drops....
After driving for about 30 minutes the display shows around 13,5v
Only lights, radio and climatecontrl on....

What does your display show?
Thanks
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Old Nov 17, 2015 | 04:30 AM
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1. Insert key into ignition, switch to position “1“.
2. Press buttons or repeatedly until the mileage is displayed within the Multifunction display.
3. Press cluster illumination button (1) 3 times in short succession. The battery voltage will be displayed.
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Old Nov 17, 2015 | 08:51 PM
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C32 amg
Mine is the same
I will double check tomorrow driving to work
Last edited by Morphh; Nov 17, 2015 at 09:42 PM.
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Old Nov 21, 2015 | 10:27 AM
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Same stuff. New battery. Cold, car off, 12.8. Running starts around 14.3 and slow drops to 13.9-14.0.
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Old Nov 21, 2015 | 10:50 AM
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Just wanted to say thanks cause I didn't know that this car had that function
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Old Dec 5, 2015 | 05:51 AM
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Originally Posted by blacksage
Same stuff. New battery. Cold, car off, 12.8. Running starts around 14.3 and slow drops to 13.9-14.0.
OK
But does it drop as low as 13,5v after about 35 mins?
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Old Dec 5, 2015 | 07:35 AM
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From: Frederick MD
83 500SEC, 87 300D, 02 C32(x2), 02 C320T (x2), 03 C320T4, 03 C320T, 03 E55, 05 E320CDI, 06 E320CDI
13.5 is still ok, it regulates the voltage as needed.
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Old Dec 5, 2015 | 05:43 PM
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It drops to 10 or 11 when I crank it and slowly drops to 13.8 or so after driving for a bit. I am not sure what number is too low though. My guess is you're fine at 13.5, but I am not 100% sure.
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Old Dec 7, 2015 | 06:52 AM
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From: Frederick MD
83 500SEC, 87 300D, 02 C32(x2), 02 C320T (x2), 03 C320T4, 03 C320T, 03 E55, 05 E320CDI, 06 E320CDI
If your battery is older or weak, a drop while cranking to 10v is possible , but if it dips anywhere below that to 9 or 8, I'd look into getting the battery tested and make sure its the right rating for the car.
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Old Dec 9, 2015 | 10:17 PM
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Originally Posted by johnhef
If your battery is older or weak, a drop while cranking to 10v is possible , but if it dips anywhere below that to 9 or 8, I'd look into getting the battery tested and make sure its the right rating for the car.
I had my battery replaced by the dealer about a month ago.
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Old Dec 10, 2015 | 06:17 AM
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From: Frederick MD
83 500SEC, 87 300D, 02 C32(x2), 02 C320T (x2), 03 C320T4, 03 C320T, 03 E55, 05 E320CDI, 06 E320CDI
rest easy then. on the off chance it does fail prematurely, its under warranty!
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