Why can't the Passat start after being parked when hot?
2 Answers
The reason why the Passat cannot start after being parked when hot is: the fuel pump suction pipe is partially blocked when the car starts, resulting in an overly lean air-fuel mixture after the car is hot, making it difficult to start the car. It is necessary to promptly go to a 4S shop for inspection and repair. Taking the 2020 Passat as an example, it is a mid-size car with body dimensions of: length 4933mm, width 1836mm, height 1469mm, wheelbase 2871mm, and curb weight 1470kg. The 2020 Passat has a front suspension of MacPherson independent suspension and a rear suspension of multi-link independent suspension. It is equipped with a 1.4L turbocharged engine with a maximum horsepower of 150ps, maximum power of 110kw, maximum torque of 250nm, and is paired with a 7-speed dual-clutch transmission.
Last time my Passat did the same thing - after stopping to rest when the engine was hot, it absolutely refused to start again, which drove me crazy. This situation is mostly caused by issues with the starter motor or starter relay, as they tend to jam or fail when heated up, especially common during summer driving. I've encountered this several times - first checked the battery (voltage was normal), ruled out battery issues, then suspected the fuel system was acting up - gasoline might vaporize and clog the injectors when hot, or the fuel pump might overheat and stop working. Later I tried simple self-checks, like waiting for the car to cool down before restarting, and sure enough it started, proving it was a heat-related failure. I recommend finding a reliable repair shop to check the relays and sensors - after all, older Passat models often have these kinds of problems. Spending a little money on repairs is better than breaking down. Regular maintenance, like periodic oil changes to prevent engine overheating, can reduce the chances of this happening. Driving safety comes first!
