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Ford Focus Saloon - Heated Front Windscreen - Engine systems warning - PTfocus

Hi

When I turn on my heated front windscreen I get an Engine System Error come up. The battery then sounds flat although it isn't and I can't start the car. The garage can't identify the fault as it doesn't do it when they have the car. Anyone know what is causing it?

Ford Focus Saloon - Heated Front Windscreen - Engine systems warning - elekie&a/c doctor

The heated front screen draws a lot of current,so any problem with the alternator/charging circuit will cause a malfunction of the system.You need to get the system checked .hth