986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

whitecliffs · 07-18-2015, 01:08 PM

Purchased a 1999 996 ECU kit for my 98 boxster with a 996 3.4 engine installed has i was still running on the 2.5 ecu.

Installed today but seems to be a fault once everything was installed ecu, immobilizer and key blade fitted to the matching key fob as soon as i attached the battery the alarm and hazards went off, engine won't crank and key fob does not work.

What ive found so far is that if i pull the black connector from the immobilizer the alarm and hazards stop, so i then removed to white connector the ecu then plugged back in the black connector connected the battery and the alarm went off again.

when i do the same thing with my original immobilizer everythings fine, so do you think the immobilizer faulty.

07-18-2015, 01:08 PM	#1
whitecliffs Registered User Join Date: May 2012 Location: Dover,Kent,England Posts: 78	996 ecu kit Purchased a 1999 996 ECU kit for my 98 boxster with a 996 3.4 engine installed has i was still running on the 2.5 ecu. Installed today but seems to be a fault once everything was installed ecu, immobilizer and key blade fitted to the matching key fob as soon as i attached the battery the alarm and hazards went off, engine won't crank and key fob does not work. What ive found so far is that if i pull the black connector from the immobilizer the alarm and hazards stop, so i then removed to white connector the ecu then plugged back in the black connector connected the battery and the alarm went off again. when i do the same thing with my original immobilizer everythings fine, so do you think the immobilizer faulty. Last edited by whitecliffs; 07-18-2015 at 01:12 PM.