2002 S60 location of Cabin Air temp sensor

JBRollo · Post by **JBRollo** » 12 Jun 2014, 16:06

Would like to clean air temp sensor (driver's side) on a 2002 S60...where is it? I assume there are two, one for driver and one for passenger.
Problem: Good cooling on passenger side; poor on drivers side. Recycle from max heat to max cool helps for a while but it eventually drifts back to where it was.
Incidentally, in winter, the passenger has good heat while the driver is rather cool!

Seems like it has a green connector. Is that correct?

Thanks!

Post by **jimmy57** » 12 Jun 2014, 20:59

there is one in car temp sensor. It is behind the 3 slot grille on the face of climate control panel.

JBRollo · Post by **JBRollo** » 13 Jun 2014, 04:43

Only one? If thats the case then my problem is probably a badly calibrated or bad driver's-side diverter motor.

Forgot to mention I have the "standard" Climate Control (manual).

wouterve · Post by **wouterve** » 13 Jun 2014, 08:31

If you have a climate control panel that looks like this:

there is no cabin air temperature sensor. If you still get warm air after some time, you might try setting the temperature up a few notches from all the way cold—that helped ‘fix’ this problem in my old S60 without having to tear open the system.

If you have automatic climate control, and your climate control panel looks like this:

you do have a cabin air temperature sensor behind the little grille. If you get warm air on only one side with this system, cleaning behind that grille is probably not going to fix it, and your system will need some form of calibration or adjustment that I’m not intimately familiar with

.

JBRollo · Post by **JBRollo** » 13 Jun 2014, 08:50

Thanks...will stop looking for the sensor! I have the manual one you pictured.
Don't quite understand how you set the temperature up a few notches from all the way cold. Are you saying move the dial up a tad from max cold? Or is there some way to increase the Max cool setting to make it colder?

Post by **jimmy57** » 13 Jun 2014, 08:56

Have some basic things been checked? Is cabin filter dirty? Is the system full of refrigerant?

If the filter is partly plugged it upsets air flow and being low on refrigerant makes the evaporator not cold across its entire surface and the air from the not cold part will cause some vents to be warmer.

wouterve · Post by **wouterve** » 13 Jun 2014, 09:05

JBRollo wrote:Thanks...will stop looking for the sensor! I have the manual one you pictured.
Don't quite understand how you set the temperature up a few notches from all the way cold. Are you saying move the dial up a tad from max cold? Or is there some way to increase the Max cool setting to make it colder?

Yep, I moved the dial up a tad (you can feel some slight clicks as you operate it). Not very far, but for me it was just enough to make a difference between warm and cold air coming out of the passenger side vents. You can see in this picture what it looked like on my panel:

JBRollo · Post by **JBRollo** » 13 Jun 2014, 09:47

That may work. The rheostat may have a dead spot.
Plan to recheck the charge tomorrow also. But we have had this problem even with a full charge as measured in pounds. We also have a fairly new compressor and clutch. My old 2000 Volvo S70 A/C has never had ANY problems and has never even needed a charge...I think it may be the last of the good Volvos!
The newer S60 Climate Control Systems are just impossibly complex and expensive; its like the engineers had a contest to see who could make the most expensive and complex system! Now they have violated all design maintainability criteria I know of. The KISS (keep it simple, stupid) principal always works best.
Thanks for your patience.