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May 23, 2026 Other

In some cases, we are seeing issues with the CLA/174

Mercedes-Benz technical service bulletin ANN - CLA/174 for 2026-2027 Mercedes-Benz Cla 250+ (EV) and 2026-2027 Mercedes-Benz Cla 350 4matic (EV).

Bulletin number
ANN - CLA/174
Component
Electrical system
Summary
In some cases, we are seeing issues with the CLA/174. After updating the CPR to 1.3.7, a coding mismatch is occurring between the CIVIC174 & IDC control units causing a driver assistance msg in the cluster. We are currently working diligently toward a solution. If you need support, please create an XSS Diagnosis case with necessary ID1 support package and we are happy to support. Thank you for your patience.

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