Fan on Climate Control stays on

Post by **Mike Langlois** » Sat Mar 21, 2020 5:06 pm

On my 2002 V70 X/C, I just noted that the small fan on the rear of the Climate Control unit is staying on. While trying to track down the source of a whine in my aftermarket radio, I noted that the small fan on the rear of the Climate Control unit is staying on. It has done this twice, even after the car sat for a day or two. First time, I could hear the fan running after the climate control unit was removed from the console; blew on it once and it stopped (who knows?); a week later the fan was on again after the car sat for a day or two. I am beginning to think this issue is related to the radio whine; they sound similar and they started at about the same time. Battery went dead a while back and I think the fan was on and draining it at the time.
The car is not a daily driver and is kept in excellent condition. 170,000 miles, with practically everything renewed/replaced, Any thoughts as to why the fan would stay on? I have another 2002 V70 here for parts and can exchange parts to trouble shoot if necessary; also get the feeling I should not mess with the Climate Control module with out some guidance. Mike

Post by **darrylrobert** » Sat Mar 21, 2020 7:49 pm

If you look closely there should be a what looks like something stuck in there (temp sensor) between the fan and the grille. I first tried to dig it out thinking it was dirt (oops), since you blew on it and the fan stopped you can try using a vacuum to clean grille or take it apart like i have and given it a good clean and inspection. I noticed mine staying on but not more than a few minutes after engine shutdown.

This maybe the temp sensor for the cabin ambient temp reading, do you have something OBD2 to check this value ?

Post by **Mike Langlois** » Sat Mar 21, 2020 8:48 pm

I shall try this.