hansdrache1
Seat Toledo climate control malfunction
Summary of the thread
The 2007 Seat Toledo's climate control panel was malfunctioning, with insufficient heating and a non-functional air conditioning system. The issue was suspected to be caused by a defective cable or plug connection. After consulting with others and conducting preliminary checks, the problem was confirmed to be a defective wiring harness and a faulty temperature sensor, which were repaired at a workshop, resolving the issue.
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4 comment(s)
hansdrache1 (community.author)
That is interesting. Where exactly should I be looking for this wiring harness? Is it difficult to access, and do I need special tools to check the connections?
gretaswift9
Yep, sounds familiar. On the Megane, the connector was behind the center console. You could try gently wiggling the wires while the car is running to see if anything happens. But honestly, given the error codes and the low heating output, I reckon taking it to a workshop might save you a headache. Electronic faults can be tricky!
hansdrache1 (community.author)
Thank you for sharing your experience. I followed your advice and took it to a workshop. They found a defective wiring harness and a faulty temperature sensor, just as suspected. The final repair cost was 95€, and now the HVAC system is working perfectly again.
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SEAT
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TOLEDO
gretaswift9
Climate control issues can be a real pain! I had something similar happen with my old Renault Megane. The air conditioning would randomly cut out. Have you checked the wiring harness connections to the climate control panel? Sometimes a loose plug can cause all sorts of electronic faults.