I have a 2005 VW passat. Its heater pressure and light ray improve when I press the gas pedal. What could be the problem? Its electrical system or something else?

Asked by Jan 04, 2015 at 04:42 AM about the 2005 Volkswagen Passat GLS 4Motion

Question type: Maintenance & Repair

4 Answers

62,905

Very slight flare up when you step on the gas is considered normal. But if it's more than that you may need a new alternator belt or the alternator itself may be failing. HTH. -Jim

1 out of 1 people think this is helpful.
107,335

I agree. Might want to also have battery tested and check battery connection to. But probably an alternator or alternator belt issue.

1 out of 1 people think this is helpful.
8,845

yep sounds like they nailed her on the head on this one.

1,325

The heater output seems normal for it to improve with engine speed.

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