Whywould the thermostat go exactly when the temp sensor housing was replaced. I run Vag com and got the fault code 17698 - Coolant Temp Sensor at Radiator Outlet (G83): Signal too Small which i cleared but it came back after a few minutes. Could the radiator outlet sensor cause the overcooling issues. Any thoughts anyone, i don't Ihave the awful 3.0 tdi lump found in Q7 / TOUAREG / CAYENNE 2012 model. I have just been working on it today as im losing coolant. I saw pink residue at the bottom lip of the water pump, so today I replaced the water pump + V belt. Unfortunately the car is still leaking. Upon looking at the TEMPSENDER Part Number: 059919523F. Supersession (s) : 059-919-523-F; 059919523A; 59919523F. . Engine Coolant Temperature Sensor. Fuel Temperature 11. Q7 MK 1 Discussion - Q7 2007 3.0 TDI Outside temperature problem - Hi, I have a problem with outside temp. I replaced outside temp. sensor, but problem still exist. Any sugestions welcome. Thanks in advance Please see the youtube video Audi Q7 outside temperature problem - YouTube. TheP2185 code stands for “Engine Coolant Temperature Sensor 2 Circuit High.” It’s logged when the PCM detects electrical faults in the ECT circuit. Various issues could trigger the code, like a malfunctioning ECT sensor, a failing PCM, and a bad connection in the #2 ECT sensor. It’s typically located in a coolant passage in the CoolantTemperature Sensor, ECT Temp Sensor Replace 158-629 Compatible with Audi VW - 1999-2010 Beetle, 1999-2006 Golf, 1999-2005 Jetta Passat, 2000-2008 A4, 2000-2009 S4, 2000-2006 TT, More 2009 2010 A6 Quattro 3.0L 2009-2010 A8 Quattro 2003 A8 Quattro all 2004 2005 2006 A8 Quattro 6.0L W12 2007 Thecoolant temperature sensor on the Audi/VW 1.8t is known to fail in a variety of ways, both mechanically and electronically. Replacement is straightforwa A6/ S6 (C6 Platform) Discussion. Coolant Temp Sensor Audi A6. How to replace it? A6 / S6 (C6 Platform) Discussion Discussion forum for the C6 Audi A6 produced from 2004-present and Audi S6 produced from 2007 - 2011. 09-07-2016, 02:59 PM. Howto control a coolant temperature sensor without removal. Cheking water sensor. This video does not constitute or replace a real specialized technical man Gloves 1. With the engine and coolant entirely cooled down, disconnect the battery. This is recommended for any electrical procedure. 2. Remove any plastic engine covers. Depending on the engine, you may have to remove part of the plastic air intake tubing. 3. Locate the coolant temp sensor. 3cfnBp.