Mercedes Benz - Undervoltage Consumer Defective

NSquared2

Junior Member

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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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

Beyond 20,000 RPM!
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vr2turbo

Beyond 20,000 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
Senior Member

ken yeang

6,000 RPM
Senior Member
Feb 2, 2006
6,620
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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...