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I purchased a 1999 Porsche Boxster 986 about a year ago and I'm having a few problems with the electrical accessories.  The top worked fine when I bought it, but now it won't work sometimes. The radio also turns on, then immediately off at startup, and it won' turn back on until a few minutes later either by itself, when I use turn signals, power windows, brake, or even just by itself. After the car is "warmed up", then it will stay on. Other things won't work right or not at all, such as the alarms for, ignition, door open, light switches, etc. The fuses are all fine, and I know the battery had been replaced right before I purchased it. I haven't checked the relay for the top, but I am about to do that now. I feel like there could be a single problem creating all these issues. Any help would be greatly helpful and appreciated! 

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Could be ignition-switch related ... an easy fix and inexpensive. From memory, I used an Audi part.

 

Test your battery.

 

If you haven't had wet carpet under the driver's seat, you might want to look anyway to see if the previous owner had and it penetrated the Central Locking Unit.

 

All of the above can give rise to weird happenings!

 

Otherwise, it could be microswitch-related. 

 

Edited by wizard
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Thank you guys for the feedback and information! I have a feeling it could be the ignition switch. I've heard 986 owner's say the ignition switch is something that will eventually go bad; and that it causes several electrical components to go a little haywire. Also, I don't know if there's any salvage history with the car, but I can tell that it has been repainted at some point. Is there any way to check this via Vin number or something? It will be a few days until I can check everything out. 

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Had ignition switch go on my uk spec 1998 Boxster common fault and had various issues just before eg wipers not working,etc think replacement has sorted issues


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I also have this problem with the radio on my 2002 Boxster. Have replaced the ignition switch but this has not solved the problem. There must be power to the radio at all times as the security code is retained. Works when ignition is on but then packs in on start. Occasionally comes back on, but sometimes not! There are no other issues. I am not sure where to even start looking now, or how to test. Any ideas appreciated.

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