Problems fixed: Kia, Land Rover, Mercedes

In this article: Leading technical supplier Autodata helps you fix three common problems found in passenger cars

The problem

After previously replacing the front anti-lock braking system (ABS) wheel speed sensor on a customer's 2009 Kia Cee'd due to the ABS/Electronic Stability Program (ESP) warning lamp illuminated, the vehicle has returned with intermittent loss of electric power steering (EPS) and the same wheel speed sensor trouble codes stored in the ABS control module fault memory.

The fix

The symptoms you describe are known to affect all Kia Cee'd models built in Slovakia up to 10/05/13. The ABS wheel speed sensor wiring harness chafes against the front inner wing panel causing an open/short circuit. Check the ABS wheel speed sensor wiring harness for damage in area indicated in fig.1. Repair or replace the wiring as necessary. To prevent recurrence of the fault, ensure adequate clearance between the wiring harness and front inner wing panel. Repeat the procedure for the opposite side. Erase trouble codes. Carry out a road test to ensure the fault has been rectified.

The problem

A customer's 2016 Land Rover Discovery Sport is suffering with a knocking noise from the front suspension when driving over rough roads or speed humps. We have heard the noise on a road test but have been unsuccessful in recreating the noise in the workshop.

The fix

We are aware of a knocking noise from the front suspension on Discovery Sport models built between 2015 and 2016. The noise is due to the front shock absorber protective cap being adrift. Lift up the shock absorber damper rod cover to gain access to the shock absorber protective cap. Thoroughly clean the area indicated in fig.2.1. Apply adhesive, available from Land Rover parts department, to area indicated fig.2.1. Fit the shock absorber protective cap into position. Repeat the procedure for the opposite side. Don’t move the vehicle for six hours to allow the adhesive to cure.

The problem

A service customer is experiencing an issue with their 2013 Mercedes-Benz CLS 2.1 Diesel. The vehicle has engine running problems and the engine malfunction indicator lamp is illuminated with various trouble codes stored in the engine control module fault memory. We do not have the information relating to these trouble codes and we are not sure if they are linked.

The fix

The problem is likely to be the engine wiring harness chafing on the engine cover. Check the engine wiring harness for damage and repair as necessary. Modify the engine cover by cutting off the section where contact has occurred, (see fig.3.1). Re-position the engine wiring harness to clear the engine cover and secure using a cable tie. Erase trouble codes and carry out a road test to ensure the faults have been rectified.