2020 Mercedes Benz Truck ML 63 AMG Technical Service Bulletin # LI82-35_P-048244

2020 Mercedes Benz Truck ML 63 AMG Technical Service Bulletin # LI82-35_P-048244 Date: 091028

Wipers/Washers - 'Low Washer Fluid Level' Warning WASHER FLUID INDICATOR ON INSTRUMENT CLUSTER INCORRECT Topic number LI82.35-P-048244 Version 1 Design group 82.35 Windshield washing system Date 10-28-2009 Validity Model 169 with code U58 Model 245 with code U58, Model 204, 216, 212 Model GLK 204, 164, 251, 221 Reason for change Applicable models and remedy updated / Supersedes DTB P-B-82.35/587 and T-B-82.35/588 Reason for block Page 227 Complaint: Washer fluid indicator is not correct. Indicator on instrument cluster shows that reservoir is empty although the reservoir contains sufficient windshield washer fluid. Cause: The electrical conductivity of the fluid in the washer fluid reservoir is not sufficient due to: a) The use of distilled or deionized water, b) Tap water content of mixing ratio is too low or c) Proportion of winter washer fluid concentrate is too high (antifreeze protection approx.100%) The electrical circuit cannot be closed by the 2-pin sensor and the message "Washer fluid reservoir empty" appears in the display of the instrument cluster. Remedy: Fill the reservoir with washer concentrate and tap water at the recommended mixing ratio (see owner's manual). Note: It is assumed that the connectors to the washer fluid level sensor are plugged in and the lines have no function impairments. Replacement of the SAM control unit or the current washer fluid level sensor does not rectify the issue. Symptoms Parts Page 228 Validity