LeoWag91

Mercedes Citan weak heating issue

My 2016 Mercedes Citan with a gasoline engine and about 92980 km has weak heating. The error memory shows a fault with the water valve. I think it's a bad cable or plug. The repair should be about 95€. Has this happened to anyone?

A 2016 Mercedes Citan is experiencing weak heating, with an error indicating a fault in the water valve. The issue might be due to a bad cable or plug. Suggested solutions include checking the engine coolant level for leaks, inspecting heater core hoses for blockages or kinks, and potentially replacing the water valve. The repair cost is estimated at 95€.

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4 comment(s)

I had something similar with my Citan. Weak heat and a water valve error. Check the engine coolant level first. A leak can cause this. Also, check the heater core hoses for blockages or kinks. If those are okay, then replace the water valve.

Can you tell me more about checking the heater core hoses? What should I look for with a valve blockage, and where are they on the Citan?

On my Citan, the heater core hoses are in the engine compartment, going to the firewall. Feel them. If one hose is much hotter than the other, that could mean a valve blockage. But with the error code, it probably is the water valve. I'd go to a shop to be sure.

I understand. Thanks for the explanation and advice. I'll have a shop check the water valve and do the repairs. I'll also have them check the coolant level and heater core hoses like you said. The repair was the water valve, costing 95€ as expected.

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MERCEDES

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CITAN