Clear Airbag Error: Can You Do It Yourself?
Clear Airbag Error: Can You Do It Yourself?
Clearing simple airbag error codes is technically possible with specialized OBD-2 diagnostic devices – but standard Bluetooth scanners are not sufficient. Important: Clearing an error code does not fix the cause. Without fixing the actual defect, the warning light will come back on immediately. Crash data in the EEPROM can only be cleared by specialist shops like Airbag24.
When the airbag warning light is on, an error code is stored in the control unit. There are two fundamentally different types of stored information: simple error codes (DTCs) that can be cleared with diagnostic devices, and crash data in the EEPROM that only specialized shops can clear. To clear the codes yourself, you must understand the difference.
What can you clear yourself – and what can't you?
Simple error codes (e.g., voltage errors after battery replacement, sporadic connector errors) can be cleared with appropriate diagnostic software. Crash data from an accident, hardware defects, and trigger flags, on the other hand, are stored in the protected EEPROM and cannot be cleared yourself.
| Error Type | Can You Clear It Yourself? | Equipment Required |
|---|---|---|
| Voltage Error (Undervoltage) | Yes (if cause is fixed) | VCDS, OBDEleven or equivalent |
| Sporadic Connector Error | Yes (if connector is tight again) | Diagnostic device with SRS access |
| Sensor Error Code | Yes (if sensor has been replaced) | Diagnostic device with SRS access |
| Crash Data (EEPROM) | No | Specialist shop only (EEPROM programming) |
| Trigger Flags (Airbag/Seatbelt Pretensioner) | No | Specialist shop only |
| Hardware Defect in Control Unit | No (error returns immediately) | Repair required |
Which Diagnostic Device Do I Need?
To clear airbag error codes, you need a diagnostic device that can explicitly access the SRS system (airbag control unit). Simple Bluetooth OBD-2 adapters with apps like Torque only reach the engine control unit and cannot clear airbag errors.
| Device / Software | Airbag Access? | Price Range |
|---|---|---|
| Bluetooth OBD-2 + Torque | No (engine control unit only) | 20 – 50 € |
| OBDEleven (VAG vehicles) | Yes | 60 – 200 € |
| VCDS / VCP (VAG vehicles) | Yes | 300 – 500 € |
| Autel MaxiSys / Launch X431 | Yes (Multi-brand) | 500 – 2,000 € |
| Workshop Diagnostics | Yes | 30 – 80 € per appointment |
Risks of Clearing Errors Yourself
Clearing airbag errors yourself carries significant risks: the actual defect remains, the safety system may not function correctly, and liability issues may arise in the event of an accident. Additionally, improper work on the system can cause unintended airbag deployment.
| Risk | Description | Possible Consequence |
|---|---|---|
| Cause Not Fixed | Error returns after a short time | Warning light comes back on |
| Defect Masked | System appears OK but doesn't work | Airbag doesn't deploy in accident |
| Incorrect Deployment | Wrong reset can trigger deployment | Airbag or seatbelt pretensioner deploys in the workshop |
| Liability | In accident without functioning SRS | Insurance may reduce benefits |
| Warranty Loss | Independent interventions documented | Manufacturer warranty may be voided |
When Does Self-Clearing Make Sense?
Clearing an airbag error code yourself only makes sense if the error cause has already been fixed – for example, after replacing a faulty sensor or tightening a loose connector. As long as the cause still exists, clearing is pointless and potentially dangerous.
Step-by-Step: Clear Airbag Error
If you have the right equipment and have already fixed the error cause, you can clear the airbag control unit's error memory as follows. Important: Never work on the airbag system itself – only clear the error memory via the diagnostic interface.
- Connect Diagnostic Device:Connect to OBD-2 port under the dashboard
- Turn on Ignition:Don't start the engine, just turn on the ignition
- Select SRS System:Select the airbag control unit in the diagnostic menu
- Read Error Codes:Note and analyze all stored codes
- Check Cause:Is the displayed error actually fixed?
- Clear Error Memory:Execute the clear function
- Turn Ignition Off/On:Restart – warning light must go out after self-test
- Check:If light comes back on, the cause is not fixed
When to Visit a Specialist Shop?
You should always visit a specialist shop if crash data is stored, a hardware defect exists, the error returns after clearing, or you are unsure. Airbag24 professionally clears crash data and repairs faulty control units – TÜV-certified and with over 20 years of experience.
- Clear Crash Data:After an accident – only possible in EEPROM
- Control Unit Repair:For internal hardware defects
- Recurring Errors:If the code returns immediately after clearing
- Unknown Cause:If you cannot identify the error
- All Brands:VW, Audi, BMW, Mercedes, Opel, Ford, Seat, Skoda and more
Frequently Asked Questions About Clearing Airbag Errors
Here you'll find answers to the most important questions about clearing airbag error codes yourself.
Can I Clear the Error by Disconnecting the Battery?
No, airbag error codes are stored in non-volatile memory (EEPROM or Flash) and remain even without power. Disconnecting the battery does clear some error memories (e.g., engine control unit), but not the airbag system's.
Is a Cheap Bluetooth OBD Adapter Enough?
No, simple Bluetooth OBD-2 adapters can typically only access the engine control unit. To access the airbag system, you need a specialized device that supports the manufacturer-specific protocol for the SRS system.
How Much Does It Cost at the Workshop?
Reading and clearing the error memory at the workshop costs between 30 and 80 euros. Some authorized dealerships even offer the service for free. If a component needs to be replaced, add the cost of the replacement part – find exact prices in our shop.
Is It Legal to Clear Airbag Errors Yourself?
Clearing the error memory itself is not illegal. However, it is forbidden to manipulate the airbag system or suppress the warning light to hide a defect – for example, when selling a vehicle. Additionally, you must not perform physical work on the airbag system (removal/installation) without appropriate expertise.