Mercedes A-Class Diesel 2011: indicator light, high temperature and low coolant level

Hello, I once had a similar problem with my 2014 Mercedes B-Class diesel. In my case, it turned out that the control unit for the parking heater was faulty. I know how stressful and worrying such situations can be, but don't worry about it for now. In my case, the workshop had to replace the control unit. It had a fault memory that could not be deleted and so the indicator light was constantly on. It's not a small problem, as it affects the entire heating system and influences the correct injection supply at speed and idling. It should be fixed as soon as possible. But don't worry, after the replacement was done, my car ran fine again. Wish you a speedy recovery for your car!

(Translated from German)

Hey, thanks for the tip! Good to hear that your car is running smoothly again. Can you remember how much it cost you to replace the control unit? And has anything similar happened again since then?

(Translated from German)

Hey, no problem, always happy to help! I paid €440 to have the parking heater control unit repaired. Since the visit to the workshop and the elimination of the message error between the control units, my car has been running like clockwork again - no more problems at all. I hope yours will work just as well!

(Translated from German)

That doesn't sound as terrible as I thought at first. 440 is quite a lot, but if my car runs smoothly again afterwards, I can live with it. Thanks for the encouraging words and the information. I'll take it to the garage tomorrow and hope it goes as well as you did. Thanks again, you've really helped me out!

(Translated from German)