Mercedes Benz - Undervoltage Consumer Defective

NSquared2

Junior Member
Aug 27, 2014
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Kuala Lumpur
Guys,

My Mercedes Benz C200K (W203) has recently prompted me with an error message - Undervoltage Consumer Defective at the display panel. I don't regularly drive the car and I expected the battery could have gone weak or even 'flat'.

Yesterday, I have 'jump-start' the car and the engine started normally. However, the after driving it for a few kilometers the Undervoltage Consumer Defective error message prompted.

Please provide me with some input with regards to the problem.

Thanks!
 

ken yeang

6,000 RPM
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Feb 2, 2006
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try voltage take reading from the battery...use a digi multi meter.

Maybe battery not charged after long underused and continuous alarm activation...
 

vr2turbo

((( God Level 30,000 RPM )))
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May 11, 2010
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Read some where in MB forum. Something to do with battery, Voltage regulator or alternator....
 

ken yeang

6,000 RPM
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Feb 2, 2006
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true oso....

Battery will have a lifespan, about 2 years with normal use. Shorter if cap ayam brand battery.

Also, Lifespan shorter if a lot of starting, and little intermittent re-charging...