986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Locking fault/car & windows opening by themselves!

Lil bastard · 04-24-2008, 11:46 PM

The US Alarm system differs significantly from the ROW unit. But, from what you describe, I'd say it's in the Alarm Control Module, or an Ignition switch going bad.

The switch is an easy DIY replacement PN#4A0.905.849.B or generic Meyle (OEM Supplier) PN# 100.905.0000 - this is a direct replacement. Use the Search function here for DIY How-to.

If that doesn't do it, you're probably looking at a trip to the dealer or independent mechanic with a PIWIS or PST2 diagnostic tester to sort it out - no other diagnostic tester will work.

04-24-2008, 11:46 PM	#2
Lil bastard Registered User Join Date: Feb 2008 Location: Du Monde Posts: 2,199	The US Alarm system differs significantly from the ROW unit. But, from what you describe, I'd say it's in the Alarm Control Module, or an Ignition switch going bad. The switch is an easy DIY replacement PN#4A0.905.849.B or generic Meyle (OEM Supplier) PN# 100.905.0000 - this is a direct replacement. Use the Search function here for DIY How-to. If that doesn't do it, you're probably looking at a trip to the dealer or independent mechanic with a PIWIS or PST2 diagnostic tester to sort it out - no other diagnostic tester will work. __________________ 1990 Porsche 964 Carrera 4 Cabriolet 1976 BMW 2002 1990 BMW 325is 1999 Porsche Boxster (gone, but not forgotten) http://i933.photobucket.com/albums/a...smiley-003.gif Never drive faster than your Guardian Angel can fly! Last edited by Lil bastard; 04-24-2008 at 11:50 PM.