A clone HEX V2 interface, purchased from AliExpress, exhibited unusual behavior when connected to a 2005 Audi A4 2.0 TDI. Initial cable tests in VCDS software revealed a “Short to Ground” error on both K1 and K2 lines. Subsequent connection to the vehicle showed a “Short to +12V” error on the K1 line, while K2 and CAN lines tested OK.
Attempting to access control modules within VCDS triggered numerous dashboard warning lights and error messages, including issues with automatic headlight adjustment, brakes, and the PRNDS indicator. While connection to modules like the engine, transmission, and ABS was possible, fault codes related to communication failures were prevalent. Reading measuring block values functioned correctly.
The engine could be started, but remained in limp mode with unresponsive throttle until a control module was selected within VCDS. Selecting a module restored normal engine operation and RPM gauge functionality. Exiting the module returned the engine to limp mode. Disconnecting the interface and restarting the car cleared all errors and restored normal vehicle function.
Inspection of the interface revealed a solder bridge connecting pins 8 and 16. Pin 16 carries +12V from the vehicle, potentially explaining the “Short to +12V” error. The excess solder was removed for further testing. A key concern remains: could this faulty cable damage the vehicle’s control modules, despite errors clearing after a restart? A refund has been requested from the seller. One possibility suggested is the presence of an aftermarket CD player potentially introducing a +12V short. Further investigation will determine if the solder bridge was the root cause of the problem and if any lasting damage occurred. A genuine Vag Com 16.8 Cable Vcds 16.8 Interface Eu is recommended for reliable diagnostics and to avoid potential vehicle damage.
Using a reliable vag com 16.8 cable vcds 16.8 interface eu ensures accurate diagnostics and helps prevent potential harm to your vehicle’s electronic systems. While clone interfaces may seem cost-effective, investing in a genuine product offers peace of mind and reliable performance.
