Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSAAB20039-3 CONVERTIBLE (9400) L4-2.0L TURBO (2.0 HOT)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMRELAYS AND MODULES - IGNITION SYSTEMTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSCOMPUTERS/CONTROLS - MULTIPLE SYSTEM MALFUNCTIONSMIU - FAULT SYMPTOM
2003 Saab 9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT)
MIU - Fault Symptom
2003 Saab 9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT)SECTION MIU - Fault Symptom
MIU - fault symptom
1. MIU - Fuel gauge does not indicate full tank
Cars affected:
Saab 9-3 (9440) 4D up to 51012606 with 58-litre tank
Saab 9-3 (9440) CV up to 56004405 with 58-litre tank
Background:
Due to faulty parameters in MIU, the tank gauge does not indicate a full tank, even though it is full.
Procedure:
Carry out "Add" ICM with Tech2 version 113.000 or later.
Note:
New parameters in MIU introduced as of VIN 51012607 (4D) and 56004406 (CV).
2. MIU - Display goes black periodically when the light switch is turned off
Cars affected:
Saab 9-3 (9440) M03-M04 with ICM1 or ICM2
Background:
Due to faulty parameters in ICM, the information display in MIU can go black periodically.
Procedure:
Carry out Add ICM with Tech2 version 117.000 or later.
Note:
New improved light parameters introduced as of M05.
1. MIU - Fuel gauge does not indicate full tank
Cars affected:
Saab 9-3 (9440) 4D up to 51012606 with 58-litre tank
Saab 9-3 (9440) CV up to 56004405 with 58-litre tank
Background:
Due to faulty parameters in MIU, the tank gauge does not indicate a full tank, even though it is full.
Procedure:
Carry out "Add" ICM with Tech2 version 113.000 or later.
Note:
New parameters in MIU introduced as of VIN 51012607 (4D) and 56004406 (CV).
2. MIU - Display goes black periodically when the light switch is turned off
Cars affected:
Saab 9-3 (9440) M03-M04 with ICM1 or ICM2
Background:
Due to faulty parameters in ICM, the information display in MIU can go black periodically.
Procedure:
Carry out Add ICM with Tech2 version 117.000 or later.
Note:
New improved light parameters introduced as of M05.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.