2015年5月26日 · *Drop solenoid with electrical connector attached. *Replace N509 solenoid and reinstall. *Ensure everything is closed up on coolant system. *Attach coolant refill/air purge …

Coolant Control Valve - Solenoid (VEMO) for Transmission Cooler N82/N509/N488 for Audi C7 A6-A7, B8 allroad-Q5, A3-Q3-TT, D4 A8-S8, Q7, Q8 and C7 S6-S7-RS7 w 4.2l, 2.0t, 3.0t and 4.0t ...more

2019年5月16日 · Based on the information I gained here, I went ahead and replaced the N509 valve (4H0-121-671-D) and the 2-pin wiring harness (1J0-973-702). There was no evidence of coolant leakage at the valve or at the 16pin connector …

Diagnose the defective coolant valve (N82, N509, or N488) using Guided Fault Finding where stored DTCs are found. Replace the defective coolant valve. Tip: Check the connectors, wiring harness, and connected control units for coolant damage. Perform repairs as necessary. Use applicable claim type.

2022年4月2日 · The dealer will most certainly bend you over backwards on this repair. I believe this is known as the N509 valve. It’s located under the car kinda on the firewall on the driver side. It controls coolant flow to the transmission cooler. Typically the seal fails and coolant floods the electrical connector.

2018年11月27日 · I looked at the Ross Tech wiki on this code. http://wiki.ross-tech.com/wiki/index.php/P2753 And it references possible causes as valve N82, N509, or N488 and possibly their wire harnesses.

For 2011-2024 Audi vehicles, TPI 2033806 suggests checking/replacing N82, N509, or N488 as needed in addition to any damaged harnesses. Inspect ECM, TCM and HVAC connections for corroded terminals.

2020年10月30日 · Until very recently I had MIL on and VCDS showed a few fault codes under 01 engine regarding shorted wires. Traced them down and found faulty coolant valves (N488 and N509) that leaked coolant and damaged connecting wires. Spent about $800 on the repair.

2020年1月27日 · Hi, please check the gearbox cooling valve N509. Check if there is water in the electrical plug. If yes, replace it. The water goes from the valve through the cable to the plug of the gearbox.

2013年5月13日 · Climate system heating performance is insufficient due to coolant loss, or due to a faulty N82 control valve. Inspection of the coolant control valves N82, N509, or N488 reveals the presence of coolant inside the electrical connector as shown in the illustration.