R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Charging/electric problem

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Old Mar 19, 2022 | 06:18 PM
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Mercedes R class 2008
Charging/electric problem

Hi everyone, I am new here
I had problem with my alternator, I gave it to workshop and they "fixed" it. Then they told me that there is a problem that the car won't charge or something like that, but the alternator shows 14v anyways.

The thing is now when I drive the car it shows 14 V, but after like driving 30 minutes or more or less it wont charge and it goes back to 12 something, then it pops "turn on engine or command will shut down in 3 minutes" while car is driving. Then I turn the engine off and wait for 10-15 minutes and turn on engine and the engine start like nothing have happend. Btw the Obd also stoped working. I haven't been in this situation before, I have had some mercedes before. Very rare situation. I would appreciate any help. And the battery is 2 months old.

Last edited by Saffarson; Mar 19, 2022 at 06:23 PM.
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