Passat can't cruise. What happened?

The reasons why the cruise control in Passat area of Pacific Auto Network can't be turned on are: 1, the fuse and relay of cruise control are faulty, and the system can't work; 2. Cable harness failure; 3, constant speed cruise button contact wear; 4. There is something wrong with the engine or gearbox; 5. The cruise control switch is damaged, resulting in circuit failure (such as brake pedal sensor failure, wheel speed sensor failure and related circuit failure, etc. ); 6.ECU cannot receive the signal of cruise solenoid valve.

1, Passat cruise button is located on the left side of the steering wheel.

2. Press the cruise icon button. At this point, the instrument cruise icon lights up and the cruise is ready.

3. After accelerating the vehicle to the required speed, press the SET key to activate the cruise, release the throttle, and the vehicle will continue to run at the current speed.

4, through the left and right keys and+keys, you can reduce the speed and increase the speed.

Constant speed cruise control system is adopted by many cars above intermediate level because of its comfort, energy saving and emission reduction. The so-called constant speed cruise control refers to a system in which vehicles can automatically travel at the same speed according to the driver's speed will on expressways or high-grade highways with small traffic flow. The GRA control system of Shanghai Volkswagen Passat Yu Ling car is configured on vehicles with multi-function steering wheel, which are the extreme version and navigation version of V6 automatic transmission car and the distinguished version of 1.8T automatic transmission car and manual transmission car. Because Passat Yu Ling car is equipped with electronic throttle (E-Gas) and CAN data bus, with the software support of data bus and engine control unit, the cruise control system can be composed with only a little hardware.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)