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Chris, Technician
Category: Volvo
Satisfied Customers: 790
Experience:  20 Years Volvo experience, Based in Maine, Volvo certified Expert.
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volvo s60: 2005 T5 2.3heater will blow hot for 5 seconds then cold

Resolved Question:

volvo s60 2005 T5 2.3
heater will blow hot for 5 seconds then cold for 5 seconds then hot for 5 seconds then cold etc etc
there is a pup noise when it changes like the a/c pump
any ideas??
Submitted: 7 years ago.
Category: Volvo
Expert:  Chris replied 7 years ago.
Hello, and thank you for your question....

The fix, is relatively simple. It does involve a trip to the dealership. There is new software available for the climate units on these cars. What is required, is to install this new software, and recalibrate the system. This has fixed many many cars.
Customer: replied 7 years ago.
is that all it is.....a software update and reboot?
Expert:  Chris replied 7 years ago.
That has fixed a good many of these. very rarely will we replace the damper motor.

I would start with that and see how it goes.
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