# Service bulletin 166599R

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.

- Type: Service bulletin
- NHTSA id: 613408
- Published by NHTSA: 2000\-07\-13
- Manufacturer's number: 166599R
- Manufacturer's date: 2000\-03\-17
- NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

CUSTOMER COMPLAINT THAT THE A/T TEMPERATURE LIGHT FLASHING AND CODE 38 FOUND IN THE TCM. \*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, Automatic transmission, Transmission control module

## Vehicles listed

- 1999 to 2000 SUBARU FORESTER
- 1999 to 2000 SUBARU IMPREZA
- 1999 to 2000 SUBARU LEGACY

## Other bulletins for the same vehicles and component

- [166399R](/bulletins/10234261.md), 2023-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE. Remanufactured Automatic Transaxle Program
- [03\-70\-12R](/bulletins/10089957.md), 2017-01-31, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. REPAIR PROCEDURE FOR HIGH\-PITCHED SOUND FROM EXTENSION HOUSING AREA USING LATEST GENERATION PRODUCTION PARTS \- 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.
- [03\-70\-12R](/bulletins/10079980.md), 2016-09-14, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. 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. IN COLD TEMPERATURES, THERMAL CONTRACTION CAUSES SHRINKING OF THE TRANSMISSION CASE. IN HIGH TEMPERATURES, EXPANSION OF THE CASE OCCURS. THESE TEMPERATURE CHANGES AFFECT THE AMOUNT OF PRELOAD ON THE TRANSFER DRIVEN SHAFT BEARINGS. IN SOME RARE CASES, WHEN PRELOAD IS VERY NEAR THE LIMIT OF SPECIFICATION COMBINED WITH UNUSUAL DRIVING CONDITIONS, THIS THERMALLY\-INDUCED PRE\-LOAD CHANGE MAY CAUSE DAMAGE TO THE BEARINGS AND RESULT IN THE SOUND HEARD BY THE CUSTOMER. A CHANGE HAS BEEN MADE TO THE EXTENSION CASE AND A NEW “DISH PLATE” ADDED. THE MACHINING DEPTH OF THE EXTENSION CASE HAS BEEN INCREASED TO ACCOMMODATE THE NEW DISH PLATE. WHEN USED ALONG WITH A SELECTIVE THRUST WASHER, THE SPRING TENSION OF THE DISH PLATE HELPS TO MAINTAIN A CONSISTENT AMOUNT OF PRE\-LOAD ON THESE BEARINGS THROUGHOUT VARYING TEMPERATURE CONDITIONS.
- [166599](/bulletins/610541.md), 2000-05-05, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). SOME CUSTOMERS MAY COMMENT ABOUT THE A/T TEMPERATURE LIGHT FLASHING AND CODE 38 FOUND IN THE TCM. \*TT
- [2000](/bulletins/610111.md), 2000-04-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. THIS BULLETIN MENTIONS IF YOU HAVE A 1999MY OR LATER VEHICLES WITH THE NEW \(SECOND GENERATION\) 4EAT AND ARE DIAGNOSING A CODE FOR A DUTY SOLENOID, CHECK THE TRANSMISSION OIL PAN FOR ANY DENTS. \*TT
- [WXM70](/bulletins/602660.md), 1999-01-06, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. SUBJECT ON TRANSMISSION CONTROL MODULE SHIFT LOGIC. \*YC

JSON: [/v1/bulletins/613408](/v1/bulletins/613408)

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