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crwdns2944351:0crwdnd2944351:0Saab 9-3 Ignition Switch Module (ISM) Replacementcrwdnd2944351:0crwdne2944351:0

crwdns2933797:0Lars Erlandsencrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Lars Erlandsen

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Saab 9-3
Type
replacement
Thing
Ignition Switch Module (ISM)
Title
Saab 9-3 Ignition Switch Module (ISM) Replacement
Introduction
I have a 2007 Saab 9-3 Aero petrol Automatic car. It has been a joy to own and ride, but recently it started to show warning messages:
"Steering lock Malfunction. Please come to a safe stop and call service" (or something like that)
On other occasions, the key would refuse to turn. Disconnecting the battery for a while would sometimes fix the issue, but this was clearly not a safe car to drive any longer.
Googling the issue revealed that there are two components involved in starting the car:
The ISM (Ignition Switch Module) is where the key is inserted.
The CIM (Column Integration Module) is located inside the steering wheel. It is the security centre and controls the central locking, ignition, immobilisation, steering lock etc.
Both of these could be the culprit. However, whereas the ISM _can_ be replaced by a layman (i.e. me!!), the CIM requires both special tools and the electronic equipment to be able to remove and replace, and pair up with a new set of keys.
So, equipped with a Haynes "Saab 9-3 Sept 2007 to 2011 Owners Workshop Manual", a set of star shaped screwdrivers, and a camera to record all the steps, as well as a pile of clear plastic bags to put the screws in and label them (they are all subtly different in size, thread and length), I set about to replace the ISM with a unit I bought on eBay. This involves removing the centre console to get to the ISM itself.
Time Required Min
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Time Required Max
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Imageid
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Difficulty
Moderate
Conclusion
To reassemble your device, follow these instructions in reverse order.
Author
Lars Erlandsen
Public
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  • Star shaped screwdriver x1 added.
  • 6-in-1 Screwdriver x1 added.

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  • Saab 9-3 ISM (Ignition Switch Module) x1 added.

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  • In Progress added.
  • Community-Contributed Guide added.

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stepid 203411 stepid 203411