noahvogel1

Seat Arosa Heating Problem

My 2002 Seat Arosa with a gasoline engine has a weird issue. At 166567 km, the heating isn't great, and the error memory says the defrost air distribution flap is faulty. I'm thinking it's a bad connection, given the age. Could that cause a general lack of heat, or is it more likely the thermostat? I'm getting significant windshield fogging.

4 comment(s)

Low heating and that fault code point to a climate control issue. I had something similar with my Arosa's HVAC unit, though I don't remember the exact code. Have you checked the blower motor resistor pack? A faulty resistor can cause temperature regulation problems, possibly affecting the defrost air distribution.

Interesting. Where is that resistor pack located? And how would that affect the defrost flap? I thought that was controlled by a separate motor.

The resistor pack is usually near the blower motor, often behind the glove box or in the footwell. As for the defrost flap, the HVAC unit is complex; a blower motor circuit problem could cause a voltage drop affecting the flap motor. However, given the error code, the flap motor's wiring or the motor itself is probably faulty. I'd advise a shop to diagnose it properly. They can test the flap motor directly.

I got it fixed. The shop confirmed it was the flap motor connection, as suspected. They cleaned the contacts, cleared the error, and it's all working. Cost 95€, which seems reasonable. Thanks again for the help!

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