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Unable to open read lid, rear spoiler alert, rear left break light war

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Issues started with being unable to open rear trunk using either the driver side switch or the remote - no sound of an actuator being triggered.

Next day, dashboard warning that spoiler wouldn't deploy.

Next day, rear left break light doesn't work.

There isn't any remote chance that these are all related, is there? Appears strange to me.

2006 Porsche Boxster S

Help appreciated in diagnosing and fix description.


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  • 4 weeks later...

Hi Richard, Not had this problem myself, but would think they are all related, and probably be caused by an earthing problem in the trunk area. Try your indicators & brake lights at same time, usually the brake lights will dim in time with the indicators if an earth wire has come off, loose or has corrosion where it connects to the body.

Given trunk, spoiler and break lights are all located in same area, I would bet they use a common earthing point so look in that area under carpets etc. Hope this helps. Regards Andy

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