Seat Alhambra preheating control unit malfunction

Seat Alhambra, build year 2020, diesel engine owner here. Mileage 68824 km. I'm experiencing a preheating control unit malfunction. The preheating lamp remains illuminated, the CEL is activated, and there's excessive smoke upon acceleration. I suspect a cable or plug connection issue within the ignition system. Any insights?

4 comment(s)

Whoa, that sounds frustrating! I had something similar happen with my Alhambra. The car preheater acted up, the engine light was on, and it was belching smoke like a dragon when I hit the gas. Is your vehicle heater doing the same? Maybe check the electrical fault codes?

Can you be more specific regarding your experience? Which component presented the fault?

Right, the preheating unit was indeed the culprit. It's a pain. I'm no expert, but if you are sure about the electrical fault, it's probably best to get it checked out at a workshop. They will know how to deal with the car preheater.

Understood. I found corrosion on the cable to the preheating unit. Replacement and diagnostic check cost 95€. I appreciate the input.

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