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Service bulletins for the 2001 Toyota 4Runner

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.

107 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
T-SB-0043-14 Rev2017-08-14. Service bulletin. EQUIPMENT:ELECTRICAL. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased. Follow the procedures in this bulletin to reset a vehicle Immobilizer or Smart Key system. NOTE: There are new security provisions required to obtain a Reset Pass-Code. It is critical that the instructions for this new process are reviewed BEFORE attempting to get a Pass-Code in the new system.
T-SB-0101-11 Rev2017-08-14. Service bulletin. ELECTRICAL SYSTEM. TSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase the risk of further damage to electrical components.
T-SB-0101-11 Rev2017-08-14. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM. TSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many lubricants, cleaners, and automotive chemicals contain silicone or other compounds that may contaminate electrical contacts, and therefore increase electrical resistance and decrease switch performance. The use of any cleaners or fluids may increase the risk of further damage to electrical components.
T-SB-0083-13 Rev2017-08-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. TSB: The procedure in this bulletin is a general guideline on how to properly diagnose the air conditioning system after a component failure. Refer to the applicable Repair Manual for vehicle specific repair procedures and parts.
T-SB-0043-14 Rev2017-08-14. Service bulletin. EQUIPMENT:ELECTRICAL. TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased. Follow the procedures in this bulletin to reset a vehicle Immobilizer or Smart Key system. NOTE: There are new security provisions required to obtain a Reset Pass-Code. It is critical that the instructions for this new process are reviewed BEFORE attempting to get a Pass-Code in the new system.
T-SB-0134-142017-08-01. Service bulletin. POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL "ON" shifting issues and/or transmission damage. Use the information in this bulletin when installing an automatic transmission/transaxle assembly.
T-SB-0014-11 Rev2017-08-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER; POWER TRAIN:AUTOMATIC TRANSMISSION. TSB: The purpose of this service bulletin is to provide information regarding the installation of the correct torque converter bolts during automatic transmission/transaxle assembly replacement. Incorrect torque converter bolts or missing washers can cause damage to the torque converter assembly.
T-TT-0362-152017-03-28. Service bulletin. ELECTRICAL SYSTEM; ENGINE. TT: THE VEHICLE MAY BE DIFFICULT TO START OR HAVE AN ABNORMALLY LOW OR ROUGH IDLE AFTER THE BATTERY HAS BEEN DISCONNECTED OR POWER TO THE ENGINE ECM HAS BEEN INTERRUPTED.
T-TT-0381-162017-03-21. Service bulletin. EQUIPMENT. TECH TIP: SOME CUSTOMERS MAY EXPERIENCE DIFFICULTY PROGRAMMING HOMELINK.
T-SB-0012-13 REV2017-03-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "TSB: FLASH REPROGRAMMING ALLOWS THE ECU SOFTWARE TO BE UPDATED WITHOUT REPLACING THE ECU. FLASH CALIBRATION UPDATES FOR SPECIFIC VEHICLE MODELS/ECUS ARE RELEASED AS FIELD-FIX PROCEDURES DESCRIBED IN INDIVIDUAL SERVICE BULLETINS. THIS BULLETIN DETAILS THE TECHSTREAM ECU FLASH REPROGRAMMING PROCESS AND OUTLINES USE OF THE TECHNICAL INFORMATION SYSTEM (TIS) AND THE CALIBRATION UPDATE WIZARD (CUW). FLASH CALIBRATION UPDATES CAN ONLY BE APPLIED TO THE VEHICLE/ECU COMBINATION FOR WHICH THEY ARE INTENDED. ECUS HAVE INTERNAL SECURITY THAT WILL NOT ALLOW THEM TO BE PROGRAMMED WITH ANOTHER ECU’S INFORMATION."
TC13-0192016-04-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0141-132016-04-12. Service bulletin. PARKING BRAKE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0122-112016-04-12. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0054-132016-04-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
T-SB-0012-132016-03-31. Service bulletin. ENGINE. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
TSB-0087-122012-08-21. Service bulletin. VEHICLE SPEED CONTROL:ACCELERATOR PEDAL. TOYOTA: ACCELERATOR PEDAL SENSOR ASSEMBLY INFORMATION REGARDING THE INSPECTION, REMOVAL, AND INSTALLATION, IF LUBRICATION OR OIL, IS APPLIED. *PE
TSB-0122-112011-12-17. Service bulletin. AIR BAGS; SEATS. TOYOTA: INFORMATION PROVIDED FOR REPLACING THE SEAT COVERS FOR VEHICLES EQUIPPED WITH SIDE AIRBAGS. *PE
TSB-0064-102010-11-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TOYOTA: TECHSTREAM ECU FLASH REPROGRAMMING PROCEDURE. FLASH REPROGRAMMING ALLOWS THE ECU SOFTWARE TO BE UPDATED WITHOUT REPLACING THE ECU. FLASH CALIBRATION UPDATES FOR SPECIFIC VEHICLE MODELS/ECUS ARE RELEASED AS FIELD-FIX PROCEDURES DESCRIBED IN INDIVIDUAL SERVICE BULLETINS. MODEL YEARS FROM 2001-2011. *PE
002072007-07-06. Service bulletin. UNKNOWN OR OTHER. TECHSTREAM ECU FLASH REPROGRAMMING PROCEDURE. *KB
050152005-07-26. Service bulletin. SUSPENSION:FRONT:CONTROL ARM:LOWER BALL JOINT. SPECIAL SERVICE CAMPAIGN 50J - PHASE I - FRONT SUSPENSION LOWER BALL JOINT MAY EXPERIENCE EXCESSIVE WEAR AND LOOSENESS CAUSING INCREASED STEERING, EFFORT, REDUCED VEHICLE SELF-CENTERING, AND NOISE IN THE FRONT SUSPENSION. *TT
010042005-02-01. Service bulletin. EXTERIOR LIGHTING:FOG LIGHTS. THE ACCESSORY FOG LIGHTS FOR 1999-2002 MODEL YEAR 4RUNNER VEHICLES MAY BECOME CORRODED AND NOT FUNCTION. THE LIGHTS SHOULD BE REPLACED AS A PAIR. *NM
040042004-05-06. Service bulletin. UNKNOWN OR OTHER. OWNER RENOTIFICATION OF NON-COMPLETED SPECIAL SERVICE CAMPAIGNS AND LIMITED SERVICE CAMPAIGNS. *MR
PG005032003-10-24. Service bulletin. TIRES:TEMPORARY/EMERGENCY SPARE TIRE. SPARE TIRE CARRIER OPERATION. VARIOUS MODLELS INCLUDING THE 2004 LANDCRUISER AND 4 RUNNER. *TT
SS002012003-10-14. Service bulletin. ELECTRICAL SYSTEM:IGNITION:MODULE. ECU (ELECTRONIC CONTROL UNIT) FLASH REPROGRAMMING PROCESS. *TT
003012003-03-25. Service bulletin. EQUIPMENT:ELECTRICAL. IMMOBILIZER KEY CODE RESET. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.