2001 Toyota 4Runner Powertrain (other) Problems

TL* THE CONTACT OWNS A 2001 TOYOTA 4RUNNER. WHILE THE CONTACT WAS AT AN INDEPENDENT MECHANIC FOR A MUFFLER REPLACEMENT, HE WAS INFORMED THAT THE VEHICLE FRAME WAS SEVERELY RUSTED. THE MECHANIC STATED THAT THE MUFFLER COULD NOT BE REPLACED AND A LEAK WAS PRESENT. THE DEALER (MCGEE TOYOTA OF HANOVER, 860 WASHINGTON ST, HANOVER, MA 02339, (866) 942-1756) INFORMED THE CONTACT THAT THE FRAME AND DIFFERENTIAL HOUSING NEEDED TO BE REPLACED. THE DIFFERENTIAL HOUSING WAS REPAIRED, BUT THE FRAME WAS NOT. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES. THE FAILURE MILEAGE WAS 170,000.

NHTSA ID

11112217

Incident

Jul 18, 2012

Mileage

170,000 mi

SINCE I GOT THE CAR, THE IGNITION KEY DOES NOT GET IN PROPERLY AND SOMETIMES DOES NOT START THE CAR. THE MOVEMENT OF THE WHEEL HELPS SOMETIMES. THERE HAVE ALSO BEEN LEAKING ENGINE COVERS THAT NEEDED TO BE REPLACED. THE STRUCTURE GETS RUSTY AND THERE IS PROBLEM WITH TRANSMISSION.

NHTSA ID

10817356

Incident

Dec 1, 2015

Mileage

100,000 mi

ECCESIVE RUST ON THE FRAME AND BODY MAKES IT UNSAFE TO DRIVE AS INTENDED

NHTSA ID

10748600

Incident

Oct 15, 2014

Mileage

113 mi

VEHICLE WAS PARKED IN MY GRAVEL DRIVEWAY. MY HOME CONTRACTOR SMELLED AN ODOR & DISCOVERED THAT MY REAR WAS LEAKING GEAR OIL. MY HUSBAND, WHO IS SOMEWHAT HANDY WITH CARS, ENDED UP SANDING OFF LOTS OF RUST ON THE PUMPKIN, THEN CLEANED IT & USED JB WELD TO SEAL WHERE HE THOUGHT THE LEAK WAS COMING FROM. (WHERE THE PARKING BRAKE CABLE WAS ATTACHED.) THIS ACTUALLY HELD FOR SEVERAL YEARS. WELL, NOW AT APPROX. 125,000 MILES, THE LEAK IS BACK WITH A VENGEANCE! AND COMING FROM A DIFFERENT PLACE OR PLACES. THE RUST IS BAD. NO ONE CAN BELIEVE IT. I HAVE TAKEN IT TO THE MECHANIC IN TOWN TWICE IN THE PAST 2 WEEKS, WHERE HE HAS TRIED TO SEAL IT WHILE IT WAS UP ON A LIFT, BUT IT KEEPS LEAKING BADLY. I DO NOT DRIVE THAT OFTEN BUT DO HAVE TO MAKE A 100 MILE ROUND TRIP AT LEAST ONCE A WEEK, & UPON ARRIVING HOME JUST NOW, IT IS A MESS AGAIN. MY HUSBAND JUST PUT IN ABOUT 20 OZ. OF GEAR OIL & WE ARE WONDERING WHAT TO DO NEXT. I HAVE BEEN READING ON 4 RUNNER INTERNET FORUMS ABOUT MANY OTHERS WITH THE SAME PROBLEM. THIS IS TOTALLY UNACCEPTABLE. THESE VEHICLES ARE DEFINITELY NOT WHAT YOU WOULD CALL CHEAP TO BUY, BUT APPARENTLY THEY ARE CHEAPLY MADE WITH INFERIOR METAL. I AM AFRAID TO DRIVE MY 4 RUNNER, & ALSO CANNOT AFFORD AN EXPENSIVE REPAIR. IF THIS RUSTING IS HAPPENING TO SO MANY OTHER 4 RUNNER OWNERS, THEN TOYOTA SHOULD DO SOMETHING ABOUT IT. I TOOK CARE OF MY VEHICLE, BUT IT MAY NOT BE TAKING CARE OF ME! PLEASE HELP! *TR

NHTSA ID

10705190

Incident

Oct 31, 2009

Mileage

80,000 mi

TL* THE CONTACT OWNS A 2001 TOYOTA 4RUNNER. THE CONTACT STATED THAT WHILE EXITING OUT OF A PARKING SPACE, THERE WAS AN OIL STAIN ON THE GROUND. THE CONTACT NOTICED THAT THE OIL WAS LEAKING FROM THE REAR DIFFERENTIAL. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 98,528.

NHTSA ID

10701753

Incident

Mar 24, 2015

Mileage

98,528 mi

ON THE REAR END DIFFERENTIAL HOUSING, THE BACK COVER AREA (NON REPLACEABLE) HAS BECOME SO POROUS BECAUSE OF HEAVY RUST SCALING AND FLAKING THAT DIFFERENTIAL FLUID SEEPS FROM IT. THE REST OF THE DIFFERENTIAL HOUSING IS MADE OF THICKER, HEAVIER GAUGE METAL AND SEEMS OK. THIS ISSUE WILL CAUSE THE GEAR OIL TO DROP BELOW THE REQUIRED LEVEL CAUSING DIFFERENTIAL FAILURE OR LOCK UP AND AT HIGHWAY SPEEDS COULD BE DISASTROUS. WHEN I REALIZED I HAD THIS PROBLEM, I SEARCHED THE TOYOTA FORUMS ONLINE AND IT APPEARS TO BE A VERY COMMON ISSUE WITH THESE VEHICLES AND TOYOTA IS AWARE BUT WILL DO NOTHING ABOUT IT. THEY WILL REPLACE ENTIRE RUSTED OUT FRAMES ON TRUCKS UNDER RECALL, BUT REFUSE TO ADDRESS THIS ISSUE? TO ADD INSULT TO INJURY THEY WANT $3000 TO REPLACE A KNOWN INFERIOR/DEFECTIVE PART. I HAVE HAD TO RESORT TO MAKESHIFT REPAIRS USING BRUSH ON BED LINER TO STEM THE LEAKING AND CHECK THE FLUID TO KEEP IT FULL. BUT WHAT ABOUT PEOPLE WHO ARE NOT MECHANICALLY INCLINED OR WHO ARE COMPLETELY UNAWARE?

NHTSA ID

10667419

Incident

Nov 30, 2012

Mileage

138,000 mi

TL* THE CONTACT OWNS A 2001 TOYOTA 4RUNNER. THE CONTACT STATED THAT THE DIFFERENTIAL HOUSING CORRODED AND CAUSED FLUID TO LEAK. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.

NHTSA ID

10652028

Incident

Aug 24, 2014

Mileage

150,000 mi

ON OCTOBER 11TH 2014, I WAS DRIVING MY 2001 4RUNNER, ON MY WAY TO WORK. HAD JUST TURNED OFF A ROAD WITH A SPEED LIMIT OF 55. AS I HIT 35MPH, MY CAR COMES TO A JOLTING STOP WITH A LOUD BANG AND DRAG ON THE TIRES. THE CAR STILL RAN, BUT THE CAR WOULDN'T MOVE. I HAD TO FINISH WALKING TO MY JOB, AS I WAS CELLPHONE-LESS AT THE TIME. I HAD TO PAY TO HAVE MY CAR TOWED HOME, MISSING AN ENTIRE DAY'S WORK, WHICH WAS A LOSS OF 120$. THE GUY WHO TOWED ME TOLD ME IT WAS DEFINITELY SOMETHING TO DO WITH MY REAR END. SO I HAD A FAMILY FRIEND WHO IS A RETIRED MECHANIC LOOK IT OVER TO SEE IF HE COULD SPOT WHAT THE PROBLEM WAS. FIRST THING NOTICED WAS MY EMERGENCY BREAK WAS ON AND FROZEN. THEY REMOVE IT, CLEAN IT, PUT IT BACK ON. I START THE CAR, GO TO MOVE IT AND THERES A CONTINUOUS LOUD BANG AND THE CAR AGAIN COMES TO THE STOP. THE EMERGENCY BREAK FROZE AGAIN. THEY ONCE AGAIN TAKE IT OFF, AND SO FAR IT HASN'T REFROZE. HOWEVER, MY CAR IS STILL MAKING THE LOUD BANGING NOISE COMING FROM THE REAR END, WHICH THEY HAVE CONCLUDED IS COMING FROM THE REAR DIFFERENTIAL HOUSING UNIT. WHICH THEY FOUND A DECENT SIZED HOLE IN, WHICH IT APPEARS SOMEONE TRIED TO COVER WITH A YELLOW GLUE TYPE SUBSTANCE. I JUST BOUGHT THE CAR, AND AM NOW CARLESS. AS I HAVE 2 SMALL CHILDREN, AND CANNOT AFFORD TO FIX A PROBLEM THAT CAN COST UP TO $3,000 TO FIX. LUCKILY I WAS ONLY GOING 35 MPH WHEN IT BROKE, AND THERE WAS NO ONE FOLLOWING BEHIND ME, OR I WOULD HAVE BEEN RE ENDED, AND HAD MORE TO FIX THAT I ALREADY DO. THIS IS A HUGE PROBLEM WITH THE MODEL CAR, AND TOYOTA REALLY NEEDS TO ISSUE A RECALL ON THE DIFFERENTIAL UNIT!!! IT'S FAIRLY DANGEROUS. I LOVED THIS CAR BEFORE THIS INCIDENT. BUT NOW IT'S USELESS TIL I CAN AFFORD THIS FIX. *TR

NHTSA ID

10651885

Incident

Oct 11, 2014

Mileage

198,000 mi

WHEN DRIVING AT 70 MPH, THE VEHICLE VIBRATES ON THE HIGHWAY. I HAVE TAKEN THE VEHICLE CONSTANTLY TO THE DEALERSHIP FOR OVER TWO YEARS COMPLAINING ABOUT THIS PROBLEM AND THEY ALWAYS TOLD ME THAT NOTHING WAS WRONG. TODAY (5/10/14), THE MECHANIC AT THE DEALERSHIP PUT THE TRUCK ON A RACK AND RAN THE CAR AT 45 MPH AND THERE WAS VISIBLE VIBRATION COMING FROM THE DRIVE SHAFT AND A LOUD NOISE THAT I COULD NEVER HEAR FROM WITHIN THE VEHICLE. ALL THIS TIME, I HAVE BEEN DRIVING A VEHICLE THAT I WAS UNAWARE COULD HAVE SNAPPED APART. THE SOUND CANNOT BE HEARD IN THE CABIN, SO I COULD NOT EVEN REPORT THAT AS A PROBLEM UNTIL TODAY. I PURCHASED THREE SETS OF NEW TIRES, HAD SHOCKS AND STRUTS REPLACED, AND BRAKE PADS TO NO AVAIL. FINALLY, AFTER SEARCHING THE WEB YESTERDAY, I REALIZED THAT THIS IS A COMMON PROBLEM WITH OTHER VEHICLES OF THE SAME MAKE AND MODEL. I'M NOT SURE IF THIS PROBLEM HAS CAUSED INJURY TO OTHERS, BUT THERE SHOULD BE A RECALL. THIS COULD CAUSE A POTENTIALLY FATAL ACCIDENT IF THAT SHAFT BREAKS. I READ THAT FOR SIMILAR MODELS (TOYOTA AND LEXUS), THE MANUFACTURER REPLACED THE PARTS UNDER WARRANTY, BUT NOTHING FOR THE 4RUNNER. THE DEALERSHIP IS CHARGING OVER $700 FOR THIS REPAIR. *TR

NHTSA ID

10587585

Incident

May 10, 2014

Mileage

107,000 mi

REAR DIFFERENTIAL HAS HAD NORMAL WEAR UP UNTIL RECENTLY WHEN I NOTICED A SECTION OF THE REAR DIFF LEAKING AND ROTTING. THE WAY THE REAR AXLE HOUSING IS BUILD IT DOES NOT HAVE A REAR COVER LIKE MOST. BUT THAT IS THE SECTION THAT HAS FLAKED AND BEGUN TO LEAK. THE FILL PLUG IS IN THE SAME AREA WHICH ALSO IS RUSTED. MAKING IT NOT POSSIBLE TO CHECK THE FLUID LEVEL. IF YOUR IN A SPOT WERE YOU DON'T HAVE THE FINANCES TAKE CARE OF THE PROBLEM IT LEAVES YOU IN A SPOT OF DRIVE IT TILL THE REAR END DETONATES. BEING AS THIS IS A COMMON PROBLEM FOR TOYOTA AND IT BEING A ONE PART FIX. I FEEL TOYOTA NEEDS TO LOOK INTO COVERING IT UNDER WARRANTY OR AT LEAST GOOD WILLING PARTS PRICES THAN LEAVING MYSELF AND OTHERS IN THE SPOT OF A $3,000.00 BILL DUE A KNOWN PROBLEM. *TR

NHTSA ID

10560603

Incident

Jan 1, 2013

Mileage

190,000 mi

DRIVING DOWN THE HIGHWAY IN 2001 TOYOTA 4-RUNNER GOING ABOUT 60 AND ALL OF A SUDDEN THE REAR END/TIRES LOCKED UP AND GOT IT TO THE SIDE OF HIGHWAY BARELY AND THEN IT STARTED SMOKING REALLY BAD. VERY LUCKY THAT IT DIDN'T CAUSE A WRECK OR NO ONE GOT HURT. CAN'T DRIVE IT OR NOTHING, MAKES A LOUD KNOCKING NOISE IN THE REAR END AND ALSO WHEN YOU TURN THE KEY ON INSIDE THE VEHICLE ALL LIGHTS ARE ON AND ITS MAKING A TERRIBLE BUZZING NOISE. SO HAD TO HAVE IT TOWED AND THAT COST ME ALSO AND I NEED THE WHOLE REAR DIFFERENTIAL AND THAT'S A LOT OF MONEY. I'VE SEEN OTHER PROBLEMS/COMPLAINTS ABOUT THE SAME THING THAT HAPPENED TO MINE. I REALLY THINK SOMETHING SHOULD BE DONE ABOUT IT, TOYOTA SHOULD BE FIXING THE PROBLEM AND WE SHOULDN'T HAVE TO PAY FOR IT. HOPEFULLY SOMETHING GETS DONE ABOUT THIS. *TR

NHTSA ID

10531528

Incident

Jul 19, 2013

Mileage

158,000 mi

THE BACK OF THE REAR DIFFERENTIAL HOUSING STARTED LEAKING ABOUT ONE DROP PER SECOND. THE VEHICLE HAS 113,800 MILES. WE BOUGHT THE CAR WITH ABOUT 20,000 MILES. IT HAS RECEIVED THE RECOMMENDED MAINTENANCE. THE SOURCE OF THE LEAK IS SEVERE CORROSION THAT HAS REMOVED MUCH OF THE STRUCTURAL METAL OF THE DIFFERENTIAL HOUSING. THE LEAK IS COMING THROUGH SEVERAL CRACKS THAT HAVE PASSED THROUGH THE REMAINING METAL. THE ONLY AVAILABLE REPAIR IS TO REPLACE THE ENTIRE REAR AXLE HOUSING TO THE TUNE OF BETWEEN $2000 AND $3000. THIS TYPE OF CORROSION IS UNUSUAL. I HAVE NOT EXPERIENCED THIS SORT OF MALFUNCTION IN NEARLY 50 YEARS OF DRIVING. *TR

NHTSA ID

10523492

Incident

Jul 4, 2013

Mileage

11,380 mi

AFTER I MY MECHANIC REPLACED THE CATALYTIC CONVERTER FOR $1500.00, THIS PROBLEM BEGAN. THE VEHICLE BEGAN TO BUCK (JERK VIOLENTLY) AS I WAS ACCELERATING TO 45 MPH. IT ALWAYS HAPPENS AT ABOUT 20 MPH AS I TRY TO ACCELERATE TO 30, 35 OR 40 MPH. THE ENGINE REVS UP TO 3 OF 4K BEFORE THE TRANSMISSIONS ENGAGES FORCEFULLY. THIS HAS BEEN GOING ON FOR NOW 3 MONTHS. *TR

NHTSA ID

10485031

Incident

Aug 30, 2012

Mileage

132,500 mi

TOYOTA 2001 4-RUNNER, THE VEHICLE HAS AN EXCESSIVE AMOUNT OF UNDERBODY,FRAME,DRIVE TRAIN RUST SPECIFICALLY THE REAR DIFFERENTIAL HOUSING UNIT. THE PROBLEM FIRST ENCOUNTERED WAS THE RR. DIFFERENTIAL HOUSING RUSTED THROUGH AND IS LEAKING OIL FROM IT.SO I CALLED TOYOTA EXECUTIVE OFFICE AND SPOKE WITH AN EXECUTIVE ANALYST, I EXPLAINED IN DETAIL WHAT THE PROBLEM WAS , SHE ARRANGED FOR THE VEHICLE TO BE TAKEN TO A TOYOTA DEALER AND INSPECTED BY THEIR MECHANICS AND THE REPORT READS AS FOLLOWS. INSPECTED REAR DIFFERENTIAL , INSPECTED HOUSING -FOUND FLUID LEAKING FROM HOUSING AT YOKE THROUGH REAR COVER ;METAL POROUS AND THIN. RECOMMENDED REPLACEMENT OF HOUSING AND ASSOCIATED HARDWARE REPAIR ESTIMATE $1491.28 PLUS TAX. THEY ALSO NOTED SEVERAL OTHER ISSUES THAT I CANNOT BE SURE IF IT WAS CAUSED BY EXCESSIVE RUST OR NORMAL WEAR. THEN UNDER MISCELLANEOUS A GENERAL INSPECTION, BY TECHNICIAN READS AS FOLLOWS VEHICLE UNDERCARRIAGE HAS HEAVY CORROSION - - FOUND PERFORATION AT FRONT SHACKLE ON RIGHT REAR OF FRAME. SECOND PROBLEM, AT THE END OF THE INSPECTION REPORT UNDER THE COMMENTS SECTION THE TECHNICIAN, HAND WRITTEN SAID FRAME IS BAD,RUST PERFORATION (SLOPPY WRITING ) I BELIEVE IT SAID, RIGHT REAR RAIL . SO AFTER THE EXECUTIVE ANALYST READ THE REPORT SHE CALLED ME AND SAID THERE IS NOTHING TOYOTA CAN DO BECAUSE THE VEHICLE IS OUT OF WARRANTY AND THERE ARE NO RECALLS. I RESEARCHED ON LINE FOR EXCESSIVE RUST AND RR. DIFF. LEAKING, AND FOUND MANY OTHER VEHICLES HAVE A LOT OF THE SAME PROBLEMS DEVELOPING. THANK YOU *TR

NHTSA ID

10478558

Incident

Sep 15, 2011

Mileage

141,460 mi

MY VEHICLE HAS VERY LITTLE RUST EXCEPT FOR THE REAR DIFFERENTIAL. LARGE FLAKES OF RUST HAVE FORMED. THE DIFFERENTIAL RECENTLY BEGAN LEAKING. AFTER SEARCHING ONLINE I SEE THIS IS A COMMON PROBLEM WITH 4RUNNERS. *TR

NHTSA ID

10471996

Incident

Aug 20, 2012

Mileage

145,000 mi

TL* THE CONTACT OWNS A 2001 TOYOTA 4RUNNER. THE CONTACT STATED THAT THE VEHICLE DIFFERENTIAL WAS CORRODED AND DEVELOPED A LEAK. THE VEHICLE WAS TAKEN TO THE DEALER WHO DIAGNOSED THAT THE REAR DIFFERENTIAL ASSEMBLY NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE WHO DID NOT OFFER ANY ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 120,000 AND THE CURRENT MILEAGE WAS 180,000.

NHTSA ID

10462123

Incident

Jun 3, 2009

Mileage

120,000 mi

REAR DIFFERENTIAL COVER RUSTED THROUGH WITH ONLY 22650 MILES ON VEHICLE. DEALER HAD TO REPLACE THE WHOLE REAR AXLE ASSEMBLY AT A COST OF $1800 BECAUSE THE COVER IS WELDED ON AND CANNOT BE REPLACED SEPARATELY. MY CONCERN IS FOR THE FRAME RUSTING OUT AND SUBSEQUENT SAFETY ISSUE AS INDICATED BY THE NUMBER OF OTHER COMPLAINTS LISTED HERE. I UNDERSTAND THE TACOMA'S HAVE SIMILAR PROBLEMS AND SIMILAR FRAMES. THE WARRANTY FOR CORROSION HAS BEEN EXTENDED BY TOYOTA FOR THE TACOMA. WHEN ARE YOU GOING TO DO SOMETHING ABOUT THIS? *TR

NHTSA ID

10460194

Incident

Mar 3, 2009

Mileage

22,650 mi

THE REAR DIFFERENTIAL ON MY TOYOTA 4RUNNER RUSTED SO BADLY IN 9 YEARS OF OWNERSHIP THAT THE STRUCTURAL STEEL FRAME THAT SUPPORTS THE DIFFERENTIAL GEARS (THE HOUSING) CRACKED AND OIL SPILLED OUT ON THE ROAD. I DISCOVERED THE RUST DURING THE YEARLY STATE INSPECTION AND CONSEQUENTLY HAD THE DIFFERENTIAL INSPECTED BY MY TOYOTA DEALER (BERLIN CITY PORTLAND, ME) A FEW MONTHS BACK AND THEY SAID IT WAS STRUCTURALLY SOUND BUT RUSTY. I AM AN ENGINEER AND CLEARLY IT WAS NOT STRUCTURALLY SOUND OR IT WOULD NOT HAVE FAILED IN SHORT ORDER AS IT DID.... THIS FAILURE COULD HAVE CAUSED THE REAR WHEELS TO LOCK UP RESULTING IN A SEVERE ACCIDENT. THIS RUST PROBLEM IS COMMON ON MOST TOYOTA TRUCK FRAMES AND DRIVE TRAINS OWNED IN THE NORTH EAST. TOYOTA HAS ELECTED TO REPAIR THE TRUCKS AT NO COST BUT NOT THE 4RUNNERS WITH THE SAME FRAME AND DIFFERENTIALS. THIS IS DANGEROUS AS [XXX]... THEY PUT ME AND MY FAMILY AT GRAVE RISK.... INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ID

10439801

Incident

Dec 5, 2011

Mileage

150,000 mi

REAR DIFFERENTIAL HOUSING RUSTED THROUGH. THE HOUSING COVER IS A THINNER METAL THAN THE DIFFERNTIAL AXLE AND IS NOT REPLACEABLE. OIL LEAKS OUT THROUGH THE RUSTED COVER UNTIL OIL IS DEPLETED AND COULD CAUSE DRIVETRAIN FAILURE WHILE OPERATING THE VEHICLE. DEALER SAID THEY WILL DO NOTHING TO HELP. THIS IS AN ITEM THAT SHOULD NEVER FAIL ON A VEHICLE. MY VEHICLE HAS ABSOLUTELY NO BODY RUST, YET THIS PART FAILS DUE TO RUST! THIS IS UNACCEPTABLE AND TOYOTA SHOULD STEP UP AND TAKE CARE OF THE ISSUE. OBVIOUSLY THERE ARE NUMEROUS COMPLAINTS ON THIS SITE AND MANY MORE ON THE INTERNET FORUMS. TOYOTA LOSES MUCH RESPECT IF THEY DO NOT ADDRESS THIS ISSUE. *TT

NHTSA ID

10427843

Incident

Aug 24, 2011

Mileage

104,000 mi

2001 TOYOTA 4RUNNER REAR AXLE HOUSING ROT/LEAK, NO SIGNS OF ABUSE. *TR

NHTSA ID

10353923

Incident

Aug 15, 2010

Mileage

120,000 mi

VSC, STABILITY/TRACTION CONTROL SYSTEM LIMITS POWER TO NORMALLY ACCELERATE FROM A STOP WHILE 4WD ENGAGED. HAPPENS 99% OF TIME WHEN IN 4WD RARELY IN 2WD MODE. DIRECTION DOESN'T AFFECT(CAN BE GOING STRAIGHT OR TURNING EITHER LEFT OR RIGHT) MAY RESULT IN REAR END OR SIDE IMPACT COLLISION BECAUSE FOLLOWING OR ONCOMING VEHICLE NOT EXPECTING MY VEHICLE TO BE AN OBSTRUCTION. NO HELP FROM DEALER. *TR

NHTSA ID

10304247

Incident

Dec 1, 2001

Mileage

1,500 mi

I HAVE A TOYOTA 2001 4RUNNER WITH 77563 MILES. THE REAR DIFFERENTIAL HAS RUSTED THRU AND LEAKS. TOYOTA IS UNWILLING TO HELP. *TR

NHTSA ID

10302191

Incident

Jan 23, 2010

Mileage

76,450 mi

MY 4RUNNER'S REAR DIFFERENTIAL HAS PINHOLE LEAKS DUE TO RUST. THE REST OF THE VEHICLE IS IN EXCELLENT CONDITION AND HAS BEEN VERY WELL TAKEN CARE OF INCLUDING CHASSIS WASHES AT LEAST TWICE A WEEK IN THE WINTER. *TR

NHTSA ID

10284845

Incident

Sep 20, 2009

Mileage

120,000 mi

THE REAR DIFFERENTIAL IS RUSTING THROUGH TO THE POINT OF LEAKING OIL. I SUSPECT THE DIFFERENTIAL IS CORRODED TO THE POINT WHERE IS MECHANICALLY UNSOUND AND COULD CAUSE A CATASTROPHIC FAILURE IF HIT BY A RIGID OBSTACLE IN THE ROADWAY. *TR

NHTSA ID

10279635

Incident

Jul 20, 2009

Mileage

122,000 mi

MY 2001 4 RUNNER WITH ONLY 125,000MILES HAS A RUSTED OUT REAR DIFFERENTIAL. THIS WAS SHOCKING TO ME BECAUSE MY TRUCK IS IN OTHERWISE EXCELLENT CONDITION AND HAS ABSOLUTELY NO RUST ON THE BODY. I TOOK IT TO TOYOTA WHO SAID THEY CAN REPLACE IT FOR $2200 PLUS TAX. I TOOK IT TO MY HUSBAND'S MECHANIC TO REPAIR/PATCH IT IF POSSIBLE. HE SAID HE HAS SEEN MANY VEHICLES WITH MORE MILES THAN MINE IN MUCH WORSE CONDITION THAT HAVE NO RUSTED OUT REAR DIFFERENTIALS. HE FOUND IT VERY UNUSUAL. HE SAID THE METAL HOUSING IS VERY THIN (FROM THE FACTORY THAT WAY) WHICH IS THE ROOT OF THE PROBLEM. THE MECHANIC WELDED A PATCH OVER THE HOLE; HOWEVER THIS IS NOT A GOOD PERMANENT FIX FOR THE PROBLEM. IT ALSO MAKES MY 4 RUNNER HAVE NEXT TO NOTHING FOR TRADE IN VALUE FOR A TRUCK THAT OTHERWISE WOULD HAVE A NICE TRADE IN VALUE. THIS MAKES IT A DOUBLE INSULT. AFTER TALKING TO MANY PEOPLE AND VISITING THE WWW.4RUNNERFORUM.COM WEB SITE IT SEEMS TO BE A COMMON PROBLEM IN 4RUNNERS YEARS 1999 TO 2002. I WOULD IMAGINE MORE PEOPLE HAVE THE PROBLEM THAN HAVE REPORTED IT TO THE WEBSITE. I WOULD LIKE TO KNOW IF THERE IS ANYTHING TOYOTA CAN/WILL DO TO RECTIFY THE PROBLEM AS IT SEEMS TO BE CAUSED BY A MANUFACTURING DEFECT. OTHER THAN THIS PROBLEM, MY 4 RUNNER HAS BEEN A GREAT VEHICLE. TOYOTA HAS A HISTORY OF GREAT VEHICLES. I KNOW THEY RECALLED THE TACOMA TRUCKS FROM THE LATE ' 90'S FOR FRAME RUSTOUT AND GAVE THE OWNERS 2 X THE TRADE IN VALUE TOWARDS A NEW TOYOTA. BECAUSE OF THIS RECALL, I KNOW TOYOTA IS WILLING TO STAND BEHIND THEIR VEHICLES. TOYOTA OFFERING A REPLACEMENT OF THE DEFECTIVE PART OR "TRADE IN VALUE" TOWARDS A NEW TOYOTA WOULD BE A GREAT CUSTOMER SERVICE AND WOULD GO A LONG WAY TOWARDS KEEPING LOYAL CUSTOMERS. IF THEY DO NOTHING, IT MAKES ME HESITANT TO PURCHASE ANOTHER TOYOTA NOT KNOWING IF THE METAL HOUSINGS ON THE REAR DIFFERENTIALS ARE MANUFACTURED ANY BETTER IN 2010.. *TR

NHTSA ID

10267566

Incident

Apr 15, 2009

Mileage

125,125 mi