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Service bulletin 166602

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10001352
Published by NHTSA2003-05-01
Manufacturer's number166602
Manufacturer's date2003-03-15
NHTSA componentPOWER TRAIN

NHTSA's summary

TRANSMISSION CONTROL UNIT (TCU) CODE 45 AND ALL-WHEEL DRIVE HARSH ENGAGEMENT. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline

Vehicles listed
SUBARU FORESTER1999, 2000, 2001, 2002
SUBARU IMPREZA1999, 2000, 2001, 2002
SUBARU LEGACY1999, 2000, 2001, 2002

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20022002002-11-05. Powertrain
02V2820002002-10-30. POWER TRAIN:AUTOMATIC TRANSMISSION
99V2490001999-09-17. POWER TRAIN:DRIVELINE:CENTER SUPPORT BEARING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SubaruNet Announcement (R2026-06-01. Other. This announcement provides information on the remanufactured CVT transmission program.
03-97-262026-05-04. Service bulletin. This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
Subaru Service Technical2025-09-02. Other. Subaru Service Technical Support Newsletter special edition.
Subarunet Announcement2024-08-05. Other. This annoucement provides parts personnel information about remanufactured transmissions that will no longer be available.
037012R2023-04-24. Service bulletin. This Bulletin provides production change, repair procedure and parts information to address a customer concern of a high-pitched sound coming from the transmission extension housing area.
166399R2023-04-17. Service bulletin. Remanufactured Automatic Transaxle Program
036812R2023-04-17. Service bulletin. 5MT Transfer Driven Gear Bearings
03-82-18R2021-02-01. Service bulletin. This bulletin announces a design change to the clutch release bearing.
03-82-182018-12-10. Service bulletin. This Service Information bulletin announces a design change to the clutch release bearing used on the models as listed above. During assembly of the bearing, a different type of grease is used which has a higher resistance to heat. In cases where the operator keeps a foot on the clutch pedal for extended periods, an increased amount of heat is generated which can cause the grease inside the bearing to deteriorate. In a case of prolonged clutch pedal application, seizure of the bearing can occur with potential damage to other related components.
03-82-182018-12-10. Service bulletin. This Service Information bulletin announces a design change to the clutch release bearing used on the models as listed above. During assembly of the bearing, a different type of grease is used which has a higher resistance to heat. In cases where the operator keeps a foot on the clutch pedal for extended periods, an increased amount of heat is generated which can cause the grease inside the bearing to deteriorate. In a case of prolonged clutch pedal application, seizure of the bearing can occur with potential damage to other related components.