How to reset immobilizer

IAN MATTHEWS

MEMBER
2011 SAAB 9-5
6 CYL
TURBO
4WD
AUTOMATIC
60,000 MILES

Car battery is dead. Electronics are not working. Door locks do not work with remote. Had to unlock driver's side door with the key. When booster cables are connected from another car, electronics work, but car will not start. Instrument panel illuminates and indicates attempted theft and immobilizer activated.

How do I reset the immobilizer, with the hood open to allow the booster cables to remain connected so the car has power?

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,552 POSTS

Hello,

I would install a new battery so jumpers are not needed, but before you reconnect the negative cable turn the key on. This should reset the security system. Here is a guide to help walk you through the battery install and diagrams below to show you how on your car:

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Check out the diagrams (below). Please let us know what happens.

Images (Click to make bigger)