Description:

This diagnostic trouble code, TSC 523965.31, is triggered when manual leveling of the suspended front axle is activated, and the TSC (TLS front-wheel drive axle) fails to achieve the necessary pressure (90 bar / 9000 kPa / 1305 psi) and the level position is not reached within 30 seconds. Potential causes include:

• A problem in the circuit of TLS position sensor (B53).
• A problem in the circuit of oil pressure sensor (B167).
• A problem in the TLS hydraulic circuit.
• Excessive ballasting.

Reaction:

When this error occurs, the front axle may not level correctly, potentially leading to improper alignment and operational issues.

Recommendations:

Inspect TLS Position Sensor:

• Check Sensor Circuit:
  • Verify the wiring and connections of the TLS position sensor B53.
  • Repair or replace any faulty components in the sensor circuit.

Inspect Oil Pressure Sensor:

• Check Sensor Circuit:
  • Verify the wiring and connections of the oil pressure sensor B167.
  • Repair or replace any faulty components in the sensor circuit.

Inspect Hydraulic Circuit:

• Check for Hydraulic Issues:
  • Inspect the hydraulic circuit for any signs of blockages, leaks, or other issues.
  • Repair any identified problems in the hydraulic circuit.

Check for Excessive Ballasting:

• Adjust Ballasting:
  • Ensure that the vehicle is not excessively ballasted, as this can impact the leveling process.

Note:

Ensuring proper function of the TLS front-wheel drive axle’s manual leveling mode is crucial for accurate alignment and smooth operation. Regular inspections and maintenance of the sensors, hydraulic circuit, and vehicle ballasting are essential to prevent issues.