Audi A4/A5/A6/A7/Q5/Q7/TT - Loss of power in heating/air-conditioning systems | BEHR HELLA



Model years: 2011 – 2014

Loss of power in heating/air-conditioning systems

Should the vehicles mentioned above experience a loss of heating and/or air-conditioning power, water entry into the wiring harness may be the cause.

Due to defective coolant control valves (heating, transmission), coolant can leak and enter the connectors and wiring. This results in electric defects and corrosion. Other defects will frequently occur throughout:

  • Coolant warning lamp flashes
  • Motor temperature high
  • Motor goes into emergency mode
  • Error code P2753/P2755

For eliminating the problem, check all coolant valves with their plugs and electric lines and replace where necessary.

The following vehicle models can be affected:

Model: year:


2010 - 2013


2011 - 2013

A5 convertible

2012 - 2014


2012 - 2014


2012 - 2014


2012 - 2014


2012 - 2013


2012 - 2013

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