Customer states that the CEL is lit in the instrument cluster Cause Debris in the coolant system Remedy...
Mercedes-Benz technical service bulletin LI20.10-P-076206 for 2020-2024 Mercedes-Benz AMG C43, 2020-2024 Mercedes-Benz AMG Cla45 and 2021-2023 Mercedes-Benz AMG Gla45.
- Bulletin number
- LI20.10-P-076206
- Component
- Engine
- Summary
- Complaint Customer states that the CEL is lit in the instrument cluster Cause Debris in the coolant system Remedy Please refer to the specific repair instructions for the vehicle you are working on in the attachments section of this LI. Before beginning work on the vehicle open a TIPS case and request the tool you will need. In your request include a contact name, phone number, and shipping address for the tool to be sent. Before the tool arrives: • Remove and replace the coolant expansion tank (reservoir) and the main radiator. • Without removing the components: flush the heater core and changeover valve (located in the right front wheel arch) in the opposite direction of flow until no debris remains. Once the tool arrives, proceed with flushing the vehicle per the instructions attached in this LI. A picture of the filter after each flush must be taken. If after the prescribed number of flushing attempts debris is still being collected in the filter, upload all the pictures to the TIPS case and wait for next steps. A scale of not-acceptable to acceptable debris level in the filter is in the attachments for you to make an assessment as well.
Owners of these vehicles have filed 2 complaints in the engine category.
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