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Eric, Automotive Repair Shop Manager
Category: Lexus
Satisfied Customers: 29737
Experience:  20+ yrs. experience as repair shop manager and technician.
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Lexus ES330: I have a 04 Lexus ES330 just replace the alternator

Customer Question

I have a 04 Lexus ES330 just replace the alternator and now the horn not working also the sunroof button is opening very slow. Before replacing the alternator everything was working fine...please help
Submitted: 6 months ago.
Category: Lexus
Expert:  Eric replied 6 months ago.
HI, I am sorry that you have not been helped yet. I just came online and saw your question.Ok, possible causes are blown fuse or relay if they did not disconnect the battery while replacing the alternator, which sometimes can cause a slight voltage spike. Could also be looking at a voltage spike to the body control module

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