stuck temperature gauge

[ms bea]

Left home today and temp was 70, drove to the coast and temp went down to 57....stayed stuck at 57 all the way home and it's got to be 70 here today. any ideas? thanks

[jwight]

OK, I'll bite. Is this a smart (which don't have temperature gauges) or some other make?

[ms bea]

ok...so it's not a gauge...I meant the outside temperature reading...sorry, of course it's bumble bee cabrio....

[jwight]

OK, that makes sense. No idea, other than if it's still reading way off from the actual outside temp it's time for a trip to your dealer. Sounds like a failed sensor to me. Anyone?

[Old smart]

On a different forum in a different part of the world on a different subject (engine overheating), it is recently noted that on one reported occasion the instrument panel engine temperature was reading abnormally high. But when an OBD II/ECU reader was applied, it indicated an actually normal temperature.

So ... if the engine coolant temperature electronics and readout might be in error, there is a possibility that the ambient temperature and its readout may also be subject to error.

[citroen]

happened to me today. temp stuck at 83 was actually 95. ran hose over the front of car. reset itself. of my 17 years living in germany never saw to many days over 83!!!!!!!

[16d @ 4]

I had the same problem one day with the up shift arrow missing as well.

I remember that day being really hot in the San Francisco area, and I was washing the Smartie.

I went out for a while (which is when I noticed the up shift arrow not there & the temp reflects the temp inside my garage) after I washed the Smartie. Then I went home; parked in the garage; The next day, everything was fine.

I don't know what exactly happened.