SRS Fault Codes
WARNING: This page is about a different car, the 1993 Mercedes-Benz 500SEL and 1993 Mercedes-Benz 500E. However, it is still accessible from the selected car via links, so may be relevant.
SRS FAULT CODES (500E)
| Code |
Fault |
Corrective Action |
| 1 |
No Fault Stored |
No Malfunctions |
| 2 |
Control Unit |
Replace Control Unit |
| 3 |
Driver-Side Air Bag Or ETR |
Check Air Bag Module Connections Check Carbon Contacts, Slip Ring & Wiring Check ETR Wiring & Grounds |
| 5 |
Driver-Side Seat Belt Buckle |
Check If Wiring Is Connected Under Seat Check If Buckle Has Open Circuit Check Grounds |
| 6 |
Passenger-Side Seat Belt Buckle |
Check If Wiring Is Connected Under Seat Check If Buckle Has Open Circuit Check Grounds |
| 8 |
Voltage Supply Or Ground |
Check Battery Voltage To Be 11-14V Check Ignition Switch Power Supply To SRS Check If Alternator Output Low |
| 9 |
SRS Warning Light Defective |
Diagnostic Connector Jumped Check For Open In SRS Light Circuit Check For Open In Control Unit Circuit |
| 10 |
Control Unit Was Activated |
Control Unit Must Be Replaced |
SRS FAULT CODES (500SEL)
| Impulse Code |
Fault |
Test Step |
| 1 |
No Fault Stored |
No Malfunctions |
| 2 |
SRS Control Unit |
2 |
| 3 |
Driver-Side Air Bag |
3 |
| 4 |
Passenger-Side Air Bag |
4 |
| 5 |
Driver-Side Seat Belt Buckle |
5 |
| 6 |
Passenger-Side Seat Belt Buckle |
6 |
| 7 |
Passenger-Side Air Bag Resistor |
7 |
| 8 |
Voltage Supply |
1 |
| 9 |
SRS Warning Light |
9 |
| 10 |
SRS Control Unit |
10 |
SRS FAULT CODES (500SL)
| Impulse Code |
Fault |
Test Step |
| 1 |
No Fault Stored |
No Malfunctions |
| 2 |
Control Unit (N2/2) |
2 |
| 3 |
Driver-Side Air Bag Wiring |
3 |
| 5 |
Driver-Side Seat Belt Buckle Switch |
4 |
| 6 |
Passenger-Side Seat Belt Buckle Switch |
6 |
| 8 |
Voltage Supply |
4 |
| 9 |
SRS Warning Light Flashing Or Defective |
6 |
| 10 |
SRS Control Unit |
7 |