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August 6, 2026 Service bulletin

The coolant warning lamp may be displayed in the instrument cluster

Mercedes-Benz technical service bulletin LI20_10-N-080868_1_en for 2023-2026 Mercedes-Benz Sprinter 2500, 2023-2026 Mercedes-Benz Sprinter 3500 and 2023-2024 Freightliner Sprinter 2500 and others.

Bulletin number
LI20_10-N-080868_1_en
Component
Power train
Summary
Complaint The coolant warning lamp may be displayed in the instrument cluster. The malfunction indicator lamp (MIL) may also be illuminated. Cause Moisture or corrosion may be present in the connector of the low‑temperature circuit switchover valve (Y97/6) or coolant pump 1 (M75/11). Remedy Inspect the connectors and pins at the low‑temperature circuit switchover valve and coolant pump 1 for moisture, corrosion, or terminal damage. If moisture, corrosion, or terminal damage is found, replace the affected connector or wiring harness and the corresponding component as required. If available, use the wiring harness as the repair measure. If the wiring harness is not available or is not applicable, replace the connector housing and required small parts in the wiring harness.

Owners of these vehicles have filed 11 complaints in the transmission category.

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