Car wash at dealership - then check engine light




Back to dealer I go...they couldn't test it. Coolant temp was too high. SO I had to leave it. Now in a loaner (don't mind a GLC for a while) ..
any ideas? could a control module have gotten wet?
2014 C250 coupe with 36k miles.




Last edited by Moto_Guzzi; Sep 22, 2018 at 05:33 PM.















