Friday, June 19, 2020

Technical Service Bulletin # Mercedes Benz Truck GLK 350 LI72-20_P-053602 Date: 120409

Technical Service Bulletin # Mercedes Benz Truck GLK 350 LI72-20_P-053602 Date: 120409

Body - Noise When Opening Liftgate In Upper End Position

Noise when opening liftgate in upper end position

Topic number LI72.20-P-053602

Version 1

Design group 72.20 Rear door, tailgate

Date 04-09-2012

Validity MODEL 204.9 up to VIN end number 808353 with code 890

Reason for change

Complaint:

When the liftgate reaches the upper end position, a single banging noise can clearly be heard.

This may be accompanied by a visible jerking movement in the vicinity of the left hinge.

Cause:

Unfavorable cutout point in the liftgate drive and the resulting sudden stress relief in the kinematics of the liftgate system.

Remedy:

1. Perform variant coding of liftgate control (HKS) control unit via Xentry Diagnostics (XD):

Xentry Diagnostics => HKS control unit => Adaptations => Configuration =>

Manual settings => Variant coding.

2. Perform normalization of liftgate control:

Xentry Diagnostics => HKS control unit => Adaptations => Teach-in processes

=> Denormalization and normalization of liftgate control.

2011 Mercedes Benz Truck GLK 350 (204.956) V6-3.5L (272.991) Page 66

Note:

The variant coding is available as of add-on 2068 for XD DVD 11/11 and/or as of XD DVD 01/12.

Symptoms

Control unit/fault code