andyjk

malfunction
Error message on my dash: Malfunction Serv.Req

7 posts in this topic

Hi,
Following message showed up on my dash this morning: Malfunction Serv.Req. No warning lights just the message. Looking through the car's manual it says that there's a malfunction in the coolant compressor or in the heating/coolant circuit. My heating and air-con work fine. Anyone else experienced this?
Thanks
Andy

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Assuming it is a 451...

 

I caught a coolant leak on the pump in the motor compartment and MB had to drain the system and replace the seals on the pump.  The coolant level was down but I noticed it because of what looked like dampness on the pump. 

coolant leak.jpg

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Thanks for the message Blaine. I forgot to mention my Smart is electric :)

A

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Posted (edited) · Report post

On 5/16/2019 at 4:28 AM, andyjk said:

Thanks for the message Blaine. I forgot to mention my Smart is electric :)

A

 

Yup, so is mine.    My AC also appeared to be working OK.

 

Is your car the older 2014(ish) ED or the current model?

Edited by Blaine

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It’s a 2015 model. I haven’t noticed and leakage under the car but I didn’t look under the hood. I’ll take it to the garage tomorrow and hope it’s nothing to serious.  The garage told me the car has a cooling system for the battery as well. 

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yes, as it turned out the valve to the battery's coolant system wasn't working and needs to be replaced. the car is barely 16.000 km old :(

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