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Cayenne 2008 Brake lights on

Nabeel Al-rasheed
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Loren Member

Loren

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You are likely going to need a Porsche scan tool to diagnose what is going in the front end control unit. Sometimes a re-programming is all that is needed - provided there are no faults reported.

Nabeel Al-rasheed Member

Nabeel Al-rasheed

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19 hours ago, Loren said:

No faults? No broken wires from the cruise control?

If so, then you will likely need a new (or used) front end control unit.

The brake lights are always on as well when I turn on the car

Nabeel Al-rasheed Member

Nabeel Al-rasheed

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1 hour ago, Loren said:

Sorry, I missed your post before. It is under the instrument panel on the drivers side.

 

On 9/10/2021 at 8:08 PM, Loren said:

No faults? No broken wires from the cruise control?

If so, then you will likely need a new (or used) front end control unit.

Will this fix the issue for the brake lights as well

Nabeel Al-rasheed Member

Nabeel Al-rasheed

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2 minutes ago, Loren said:

I doubt it - that may be a separate issue.

Well The cruise I put it on I see the light but does not engage and when I turn on the car the brakes lights are always on without me present on the brakesThe cruise I put it on I see the light but does not engage and when I turn on the car the brakes lights are always on without me present on the brakes

  • Admin
Loren Member

Loren

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8 minutes ago, Nabeel Al-rasheed said:

Well The cruise I put it on I see the light but does not engage and when I turn on the car the brakes lights are always on without me present on the brakesThe cruise I put it on I see the light but does not engage and when I turn on the car the brakes lights are always on without me present on the brakes

 

Lots of possibilities - brake booster, shorted wire, bad bulb connector, bad switch, control unit.

Did you drive through high water at any time?

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