A/T - 5th Gear Shudder

TRANSMISSION & CLUTCH
TC001-05

Title:
FIFTH GEAR SHUDDER

Models:
'04 - '05 LX 470

January 28, 2005

Introduction

Some 2004 and 2005 model year LX 470 vehicles may exhibit a shudder (or vibration) sensation, usually accompanied by a cyclic droning noise, when lightly accelerating (less than 15% throttle) after the transmission shifts into 5th gear (usually between 35 and 45 mph). This condition may be caused by water entering the transmission breather, contaminating the transmission fluid. The transmission breather has been changed to prevent water intrusion.

Applicable Vehicles

^ 2004 - 2005 model year LX 470 vehicles produced BEFORE the Production Change Effective VIN shown below.





Production Change Information





Parts Information





Warranty Information

Applicable Warranty*:
This repair is covered under the Lexus Powertrain Warranty. This warranty is in effect for 72 months or 70,000 miles, whichever occurs first, from the vehicle's in-service date.

* Warranty application is limited to correction of a problem based upon a customer's specific complaint.

Repair Procedure





1. Remove automatic transmission with torque converter.

A. Disconnect the breather tube and transfer rear case hose No. 1 from the transmission breather skirt (vent).

B. Remove the transmission with torque converter. Refer to the Technical Information System (TIS), 2004 or 2005 model year LX 470 Repair Manual; Automatic Transmission: Automatic Transmission Unit: Removal.





2. Replace Transmission Breather Skirt (Vent). Remove the bolt and replace the transmission breather skirt (vent).

Torque: 12 N.m (122 kgf.cm, 8.9 ft.lbf)

3. Install new automatic transmission with new torque converter.

A. Install the new transmission with new torque converter. Refer to TIS, 2004 or 2005 model year LX 470 Repair Manual; Automatic Transmission: Automatic Transmission Unit: Removal.

B. Reconnect the breather tube and transfer rear case hose No. 1 to the transmission breather skirt (vent).

4. Adjust fluid level in transmission. Refer to TIS, 2004 or 2005 model year LX 470 Repair Manual; Diagnostics: Automatic Transmission: Pre-Check.

5. Road test and confirm proper transmission operation.