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August 28, 2026 Service bulletin

Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same...

Mercedes-Benz technical service bulletin LI46.35-P-067339 for 2015-2026 Mercedes-Benz C300, 2020-2026 Mercedes-Benz E350 and 2016-2027 Mercedes-Benz GLC 300 and others.

Bulletin number
LI46.35-P-067339
Component
Steering
Summary
Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not impact the ability to safely steer or control the vehicle. Cause Ball screw drive (KGT) of electric steering damaged by: 1. External force due to: ‑ Hitting the curb/posts with the front wheels. ‑ Driving over obstacles (e.g. pothole/ threshold/ speed bump/ gully) at an inappropriate speed. 2. Corrosion/ water ingress through a damaged boot (see attachment). ‑ Cracks (1) ‑ High pressure cleaner (2) ‑ Animal bite (3) See various examples listed in the attachments for examples of outside influence. Remedy Remove boot clamps closest to steering gear housing on both left and right (as seen in "Steering Rack Boot Clamp Location"). Pull back boot and inspect for rust, broken end stops, water, or any other anomalies. Replace electric steering. Note: Steering gears replaced due to outside influence or damage must not be claimed under warranty!

Owners of these vehicles have filed 263 complaints in the steering category.

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