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When you mean weak do you mean the air is not coming out stron or the heat is poor? Does this happens when set to full heat or when on auto mode? Do you have the touchscreen controls or standard controls?
Both. Air is not coming out strong enough and the heat is poor. When its at full heat, the driver's side heat is not strong enough and heat is poor. passanger side works fine though... when its on auto mode, I just figured out that the heat does not work at all in any region of the car.(but air conditioning works all around Auto and Full) I have standard controls. thanks