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2008 Saab 9-3, Aero-Central Locking Issue

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=148455
Printed Date: January 11, 2026 at 9:54 PM


Topic: 2008 Saab 9-3, Aero-Central Locking Issue

Posted By: arun8989
Subject: 2008 Saab 9-3, Aero-Central Locking Issue
Date Posted: January 10, 2026 at 5:38 PM

Hello Guys,

I have been having Central locking issue with my Saab car.

This issue started after switching my side mirrors for a auto foldable one from UK,Also at the same time,I had been having keyfob issue before that as well (Broken negative battery holder metal inside). I vaguely remember, entering into the car with a physical key, this was after putting in the Autofold Mirros in, the car alarm went off and I turned on the Ignition with the fob, started the car but the lock issues started with it. So, even though I'm not completely sure, what is going on, I think its not the wiring inside the door Panel I doubled check and sprayed some contact cleaner as well. It has something to do with immobilizer?

Immobilizer symptoms :

Its starts blinking when the ignition is on but once I take the Keyfob from the ignition , the immobilizer stops blinking, the car doesn't seem to be armed, Before, it used to continually blink even when the car was turned Off and locked. I think this symptom is the result of me trying to enter the car with physical key and setting off the alarm.

The lock symptoms :

.Unlock function works both with the keyfob and buttons on the door panel/trims.
.Lock function does NOT work either with keyfob or the buttons inside on the door panel/trims.
.While pressing unlock, the rear doors unlock but the front doors stay locked
.I used a tech 2 scanner to individual command to each front doors separately, When I give, lock command the front driver side door unlocks and when give lock command, nothing happens, some sound inside the panel, same happens with the front passenger door.

Now, have newly programmed keyfob.

Tried and failed solutions

.I check the fuse for both door modules and audio, those are fine.
.I disconnected battery and several hours, did all the bleeding for a completely reset.
. Double checked the mirror wiring, seems OK.

I'm posting a link to very similar problem form someone online.

https://www.reddit.com/r/MechanicAdvice/comments/12eemy1/door_locks_then_directly_unlocks/

If any of you here can help, it would be greatly appreciated. Thank you.

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sa






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