5E45

What the Code Means

Code 5E45 points to a plausibility error in the steering angle sensor. The sensor signal doesn't match other vehicle data, such as wheel speed or lateral acceleration. The fault often comes from a misaligned or contaminated sensor, which triggers the DSC and ABS warning lights.

The steering angle sensor is part of the SZL module (Steering Column Switch Cluster) and feeds data to the DSC and ABS units so the stability and braking systems work correctly.

Symptoms

• DSC (Dynamic Stability Control) malfunction
• ABS warning light on
• Traction control fault warning
• Warning lights come on while driving or turning the wheel

Diagnosis and Repair

Step 1: Read the Fault Codes

Use a diagnostic tool (ISTA, INPA) to confirm code 5E45 and check for related faults.

Step 2: Clean the Steering Angle Sensor

Try cleaning dirt and dust off the sensor. In some cases this clears the problem.

Step 3: Replace the SZL Module

If cleaning doesn't help, replace the SZL module (Steering Column Switch Cluster) as a complete unit.

Step 4: Calibrate the Steering Angle Sensor

After replacement or cleaning, calibrate the sensor with ISTA. This step is required for the DSC and ABS systems to work correctly.

Secondary Problems

Ignoring code 5E45 can lead to a complete loss of DSC and ABS function, which significantly reduces vehicle safety, especially in emergency situations. The SZL module can also fail entirely, which affects the column switches (turn signals, wipers, cruise control). Get the fault fixed as soon as possible.