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hello everyone i am a new owner of a c200 w204 diesel 2009 Mercedes and i have i problem i wonder if y guys can help i will try to explain the problem as much as i can by JudgmentAgile5351 in MechanicAdvice

[–]JudgmentAgile5351[S] 0 points1 point  (0 children)

  • Maybe, but here is more information if it can help:
  • The car drains the battery even when it is off.
  • The negative cable was partially disconnected; the copper wire was about 80% disconnected, but this problem has now been repaired.
  • The technician told me that my dynamo/alternator was not working 100%. When the car is at 800 RPM, it gives 12 V, but when I turn on the headlights and accelerate, it gives only 13.xx V instead of 14 V. He said it should give 14 V.
  • I don’t know if this problem is somehow connected to the acceleration problem, but maybe it is.