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.
Steering angle sensor
The steering angle sensor is installed in the steering column switch cluster (SZL). The steering angle sensor measures the steering wheel angle optically and without contact. The steering angle sensor is fitted on the printed circuit board with the evaluation electronics. The steering angle sensor consists of the following components: encoded disc and optical sensor. The encoded disc is connected to the steering wheel via the coil spring cassette. When the steering wheel is moved, the encoded disc moves within the optical sensor. There are various line patterns for evaluation on the encoded disc.
| Index | Explanation |
|---|---|
| 1 | Steering column lever, turn indicator/high-beam switch |
| 2 | Plug connection to the priming caps of the airbag |
| 3 | Plug connection for horn switch, multifunction buttons and steering wheel module |
| 4 | Column-mounted stalk for wipe/wash switch |
| 5 | Plug connection, vibration actuator, power supply |
| 6 | Steering wheel driver |
| 7 | Stop bolt for steering-column switch cluster (SZL) with steering-angle sensor |
The SZL is connected across the FlexRay via the central gateway module (ZGM) with the DSC control unit.
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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.