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EricFromCT
EricFromCT, ASE Certified Technician
Category: Porsche
Satisfied Customers: 3418
Experience:  ASE Master certified L1, L2, Diesel Certified 16 years experience
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I just changed the light bulb for my brake light on my '04

Customer Question

i just changed the light bulb for my brake light on my '04 Cayenne and the brake light still isn't working
JA: Does the third light work?
Customer: Yes it does
JA: Are you fixing your Cayenne yourself? What have you tried so far?
Customer: Yes, I'm fixing it myself. I only tried replacing the brake light bulb so far
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 1 month ago.
Category: Porsche
Expert:  EricFromCT replied 1 month ago.

Hi. The fuse box has built-in circuit protection. Many times when the bulb blows, it sends a spike in voltage and the fuse box goes into circuit protection mode. If you have a scan tool you can reset the fuse box. But most of the time, just disconnecting and reconnecting the negative battery cable will also reset the module. I would try that first. Otherwise, if that doesnt work you may be looking into a wiring problem or bulb socket issue.

Expert:  EricFromCT replied 1 month ago.

I see that you viewed my response. Have you been able to try and disconnect the cables?

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