- Engine / equipment
- 2.0 TFSI in the Audi A4 (B8), A5 (8T), Q5 (8R) and A6 (C7)
- Period mentioned
- 2012–2014
- Symptoms
- Engine warning light, coolant level warning, a heater that barely warms, a higher than normal temperature and limp mode; sometimes also automatic gearbox faults.
- Possible cause described
- One of the coolant control valves (N82, N509 or N488) leaks, and the coolant enters the wiring harness through its connector and reaches several control units; codes P275300 or P275500 may appear in the gearbox. Audi describes it in bulletin 01 15 31 (July 2015).
- Check for the garage
- With a high temperature, stop and do not drive on; do not open the reservoir when hot. At the garage, have them check the coolant valves and their connectors, and whether fluid has entered the harness, before replacing control units.
- Cost cited in the source
- No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.
KNOWN FAULT · Audi
Coolant loss from valves N82, N509 or N488, with coolant entering the wiring harness
Sources are not verified in real time and no entry confirms that your car is affected.
Has this happened to you?
Anonymous answer, no personal data.
Frequently asked questions
How much does it cost to repair this fault?
No verified estimate; ask the garage for a quote.
A rough figure from the original database, not an up-to-date quote.
Calculate estimateHow is it checked?
With a high temperature, stop and do not drive on; do not open the reservoir when hot. At the garage, have them check the coolant valves and their connectors, and whether fluid has entered the harness, before replacing control units.
What are the symptoms?
Engine warning light, coolant level warning, a heater that barely warms, a higher than normal temperature and limp mode; sometimes also automatic gearbox faults.
Which cars and years does it affect?
- Brands
- Audi
- Engine / equipment
- 2.0 TFSI in the Audi A4 (B8), A5 (8T), Q5 (8R) and A6 (C7)
- Period mentioned
- 2012–2014
Taking it to a garage?
Models with this entry
- Audi A4 (B8)2007–2015
- Audi A5 (8T)2007–2016
- Audi A6 (C7)2011–2018
- Audi Q5 (8R)2008–2017
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