The CTS is new, genuine from Audi and also the symptom only happens with A/C is OFF while driving. However, if car is parked after highway driving than it obviously doesn't matter since A/C will be off hence the suspicion of the aux pump. Although I don't really know if the aux coolant pump is an after-run pump like the turbos or not. Is down below the fuel pump. Look behind the engine. You'll notice silver insulation covering wiring and the sensor down there next to the exhaust pipe. You have found the sensor. This view is from the side of the car, looking past the EGR cooler and engine lifting eye. Audi S3 8L faulty Coolant temp sensor symptoms and how to change a coolant temperature sensorDiscover the symptoms of a faulty coolant temperature sensor in 6. Bad blower motor. If there is no air flow or reduced air flow from the vents on your Audi Q7, bad blower motor could be the culprit. A worn out or weakened blower motor can also produce abnormal sounds when in operation. You cannot repair a broken blower motor, the part must be replaced with a new one. 5a. (1.8L only) There is a sensor located in the same location that is clipped in, remove this sensor to drain the coolant. 6. Once coolant is finished draining into your bucket, close the drain cock same way as you opened it (push up, twist, push up more, twist). 7. Fill coolant reservoir with hot tap water. 8. Put resevior cap back on. 9. psk0F3. Re: Coolant Temp Sensor Location - 3.0 TDI – 27-08-2014,10:54 AM. Originally Posted by Lukenkarl. It is under the pipe that goes form the Air mass meter to the turbo. Ah right, so not too hard to get at. Just a case of removing that pipe. For cars with the 3.0 TDI engine, what does your coolant temperature gauge display when the ambient air temperature is 15 Deg C or above? I have an issue where below 15 Deg C, the coolant temp gauge sits at 90 and is steady which is fine, but at 15 or above, the gauge fluctuates down to 75 and wanders slightly. Engine has to be warm (coolant above 85 C) Go to Engine Measuring Block 000 (Group 004 for V6 TDI) Switch to Basic Settings. Take note of the values in fields 2 (timing) and 9 (fuel temp) Report in the following graph. Specification is within the shaded area between the blue and red lines I have a 2013 Q7 3.0 TDI is done just over 100k. The car warns me of high engine temp and the gage reads 130'c, i can stop the car then re-start and the gage will go down. The rad pipes feel warm but not overheating temperature (touchable) and there is no leaks of coolant. the fans kick in as normal when the engine left running for a prolonged Code: 10382 - Coolant Circulation Valve (N214) P1257 00 [096] - Open Circuit Intermittent - Not Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 2 Fault Frequency: 4 Mileage: 252040 km Date: 2023.06.25 Time: 18:56:14 Engine RPM: 1713.00 /min Normed load value: 62.4 % Vehicle speed: 74 km/h Coolant

audi q7 3.0 tdi coolant temperature sensor location