Mercedes Benz

Steering - Squeak/Squeal Noises When Turning Date: January 31, 2007 Order No.: T-B-46.20/31b Supersedes: T-B-46.20/31a dated June 30, 2006 Group: 46 Revision History Revision Date Purpose b 1/31/07 Step 3 - Points a through d Added / Warranty Information Updated a 6/30/06 Damage Code Revised - 3/27/06 Initial issue SUBJECT: Model 163.154/157/172/174/175 Squealing / Squeaking Noises From Area of Rack-And-Pinion When Steering in Both Directions If you receive customer reports in the above model vehicles of squealing or squeaking noises when steering in both directions when the engine is warm, the cause may be due to insufficient lubrication at the radial shaft sealing ring in the control head. Lubrizol 6178 must only be used once in the steering system. No more than 50 ml of Lubrizol 6178 may be added. The prior use of Lubrizol 6178 in the system can be verified by a yellow dot on the steering gear and power steering pump housings. NOTE: If the symptom continues ...