Complaint Head-up display permanently or sporadically unavailable

Bulletin number

LI54.30-P-078309

Component

Electrical system

Summary

Complaint Head-up display permanently or sporadically unavailable - with warning message in driver display (see attachment) Head-up display permanently or sporadically unavailable - without warning message in driver display Display permanently or sporadically discolored and out of focus (see attachment) Cause Software for the A40/12 - Head-up display and N133/1 - Instrument cluster (IC) Software for the A40/12 - Head-up display and N133/1 - Instrument cluster (IC) is now available. Please update both control units. Note: Please do not replace any parts for this complaint. NOTE: The information contained in this document is intended for use by trained, professional technicians with the knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes resulting in the same or similar symptoms or conditions described in this document, and trained professional service Technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.

Owners of these vehicles have filed 132 complaints in the electrical category.