Beforechanging out as a logical step, maybe just look at your grill area in general--wherever exactly it is located on a Q5. Anything stuck in that area, anything broken or dislodged, etc.? The sensor is always forward in the airstream to avoid engine heat fake outs, but other things can interfere, shrouds dislocated, chin hits, etc. A4(B8 Platform) Discussion - coolant temp sensor connector P/N B8 - Does anyone know the part number of the connector to the coolant temp sensor. Discussion Discussion forum for the B8 Audi A4 produced from 2008.5 coolant temp sensor connector P/N B8 Can anyone show or tell me the location of the coolant temp sensor 38"extension bar. 3/8" ratchet. Parts required:-. G395 sensor (Part number 4H0 959 126 B) - See Note at the bottom. Here's how. At the very front of the engine bay, remove the 4 Torx30 screws from the plastic trim piece that covers the gap between the grill and the radiator,and goes the full width of the car. OrderAUDI A4 B8 Saloon (8K2) 2.0TFSi 211 HP Coolant temperature sensor easily at AUTODOC Fast delivery and low prices Discover now for yourself Actual offers of Coolant temperature sensor for AUDI A4 B8 Saloon (8K2) 2.0 TFSi Petrol 211 HP . Engine cooling system. Coolant temperature sensor. AUDI. A4. A4 Saloon (8K2, B8) 2.0 TFSi. view AudiForums A4 Series. A4/S4 forum(B5 Chassis) Anyone know if audi have changed the temp sensor on the tqs ordered one and its dark green prt no is 059 919 501 where as mine is blue iirc do i need the blue one ?? Holds drops back to zero then returns to where it was then makes it to 90'c. Where is the sensor and stat located? I'll AmbientAir Temperature Sensor. Audi A4. Genuine Audi Part - 8Z0820535 (8Z0-820-535) Ambient Air Temperature Sensor. Fits A4 (2002 - 2021) Ambient Air Temperature Sensor - Repair or Replace Your A/C system includes a network of sensors that, if malfunctioning, can cause your air conditioning to stop working correctly. Let our Howto change temperature sensor - Audi A4 B5 1 8T Amazon Wishlist AudiS4/A4/A4 Cab (B8 Chassis) . M. michaelcrxvt Registered User hi, i have a 2009 audi a4 2.0 tdi quattro 170bhp caha engine and it very rarely gets up to temperature. Exhaust Temperature Sensor. Murpheus; Apr 4, 2015; Replies 11 Views 6K. Apr 7, 2015. RapidAssistant. R. L. Temperature gauge fluctuating. plfBJY.