Thermometer not accurate

[John Richard]

Any ideas on how I can reset the ambient temp reading in the dash? It is a good 15+ degrees too low.

[Red Bread]

Change to Fahrenheit?

[spydrz]

Any chance you just ran through a carwash? That does it for me.

[Grovsnus]

Originally Posted by Red Bread

Change to Fahrenheit?

He's in Costa Mesa, CA, and it's April. There's no way the difference between C and F figures is 15 (that happens at around -21C/-6F).

More likely, the thermometer probe or surrounding area got wet.

[Red Bread]

I forgot my smiley. I used to love a few miles from there in Laguna Beach.

[nospam]

You probably need your thermometer replaced. That was the case when the same happened to me in my E46 years ago. Take it to the dealer, they will either reset or replace.