2020 Mercedes Benz Truck ML 350 Technical Service Bulletin # LI83-50_P-0473262 Date: 120424
A/C - No Cooling Output/Rear A/C Line Leaking
No cooling output/ rear A/C line leaking
2020 Mercedes Benz Truck ML 350 4MATIC (164.186) V6-3.5L (272.967) Page 79
Topic number LI83.50-P-047326
Version 2
Design group 83.50 Rear air conditioning
Date 04-24-2012
Validity X164/ model series 251 with rear air conditioning
(code 582) production up to and including 01/2010
Reason for change Damage code corrected
Complaint:
No cooling output/ rear A/C line leaking.
Cause:
Unfavorable material pairing of rear A/C line and plastic spacers leads to corrosion of the rear A/C line.
This is noticeable at points directly under the spacers of the rear A/C line.
Affects vehicles built up to and including January 2010.
Remedy:
1. Remove and dispose of leaking rear A/C line.
2. Install new rear A/C line.
The current rear A/C lines for both model series 251 and X164 feature optimized plastic spacers.
