Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
70–25K
225–50K
2050–75K
3775–100K
60100–150K
23150K+
149 reports with mileage · 72 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Power Train. Review the 129 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Engine And Engine Cooling. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Air Bags. Review the 14 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
18 crash reports10 fire reports11 injury reports
What owners actually said
221 reports
165,000 miles · Jul 7, 2011
Power Train
THE AUTOMATIC TRANSMISSION ON MY 1999 LEXUS RX300 FAILED AT 165,000 MILES. IT CONSTANTLY TRIED TO DOWNSHIFT, AND AS A RESULT IT RAN HOT AND BURNED TRANSMISSION FLUID. PRIOR TO FAILING, IT CEASED SHIFTING INTO OVERDRIVE WHILE I WAS ON THE HIGHWAY, FORCING ME TO DRIVE IN A LOW GEAR AT 4,500 RPMS AND WASTE GAS WHILE I DROVE AS FA…
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THE AUTOMATIC TRANSMISSION ON MY 1999 LEXUS RX300 FAILED AT 165,000 MILES. IT CONSTANTLY TRIED TO DOWNSHIFT, AND AS A RESULT IT RAN HOT AND BURNED TRANSMISSION FLUID. PRIOR TO FAILING, IT CEASED SHIFTING INTO OVERDRIVE WHILE I WAS ON THE HIGHWAY, FORCING ME TO DRIVE IN A LOW GEAR AT 4,500 RPMS AND WASTE GAS WHILE I DROVE AS FAR AS I COULD TOWARD THE MECHANIC. *TR
NHTSA ODI #10410930
145,000 miles · Jun 11, 2011
Power Train
MY DAUGHTER WAS DRIVING HER 1999 LEXUS RX300 TO WORK WHEN, IN HEAVY TRAFFIC, THE TRANSMISSION COMPLETELY DISENGAGED ALMOST CAUSING HER TO HAVE AN ACCIDENT. SEVERAL CARS ALMOST HIT HER WHILE SHE TRIED TO NAVIGATE THE CAR OFF THE ROADWAY TO A SAFE PLACE. CARRIED THE CAR TO THE LOCAL TOYOTA DEALER (THERE IS NO LOCAL LEXUS DEALER …
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MY DAUGHTER WAS DRIVING HER 1999 LEXUS RX300 TO WORK WHEN, IN HEAVY TRAFFIC, THE TRANSMISSION COMPLETELY DISENGAGED ALMOST CAUSING HER TO HAVE AN ACCIDENT. SEVERAL CARS ALMOST HIT HER WHILE SHE TRIED TO NAVIGATE THE CAR OFF THE ROADWAY TO A SAFE PLACE. CARRIED THE CAR TO THE LOCAL TOYOTA DEALER (THERE IS NO LOCAL LEXUS DEALER HERE) AND WAS TOLD THE TRANSMISSION WOULD NEED TO BE REPLACED AND THE COST WOULD BE $3,700. THERE WERE NO ADVANCED INDICATIONS THE TRANSMISSION WAS HAVING PROBLEMS IT JUST SUDDENLY QUIT WORKING. THIS IS A VERY DANGEROUS SCENARIO AND WE ARE BLESSED THAT OUR DAUGHTER WAS NOT INVOLVED IN AN ACCIDENT DUE TO THE TRANSMISSION FAILURE. *TR
NHTSA ODI #10405938
145,000 miles · Mar 1, 2011
Power Train
TRANSMISSION FAILURE AT 145K NO WARNING 4K TO REPAIR. *TR
NHTSA ODI #10386078
110,000 miles · Jan 20, 2011
Power Train
TRANSMISSION FAILURE AT 110K MILES; REQUIRED TRANSMISSION REPLACEMENT. *TR
NHTSA ODI #10378066
130,000 miles · Jan 4, 2011
Engine And Engine Cooling
WHILE DRIVING ON A 2 LANE MOUNTAIN ROAD THE ENGINE ON MY 1999 LEXUS RX 300 STARTED KNOCKING LOUDLY AND FAILED. I WAS ABLE TO SWING INTO A PULL OUT AND DID NOT GET HIT. THIS FAILURE IS DUE TO SLEDGE BUILD UP. I AM A SECOND OWNER OF THE VEHICLE AND DID NOT RECEIVE NOTICE FROM TOYOTA ABOUT REPLACING A DEFECTIVE ENGINE . I PURCH…
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WHILE DRIVING ON A 2 LANE MOUNTAIN ROAD THE ENGINE ON MY 1999 LEXUS RX 300 STARTED KNOCKING LOUDLY AND FAILED. I WAS ABLE TO SWING INTO A PULL OUT AND DID NOT GET HIT. THIS FAILURE IS DUE TO SLEDGE BUILD UP. I AM A SECOND OWNER OF THE VEHICLE AND DID NOT RECEIVE NOTICE FROM TOYOTA ABOUT REPLACING A DEFECTIVE ENGINE . I PURCHASED VEHICLE IN 03 HAD IT IN FOR REPAIRS IN 07 THE DEALERSHIP FAILED TO INFORM ME OF THE LAWSUIT AND CORRECT THE ENGINE AT THAT TIME. NOW THIS INCIDENT IN 2010. I COULD HAVE LOST MY LIFE IF I WERE TO HAVE BEEN HIT ON THIS MOUNTAIN ROAD THAT SITS ON THE CLIFF AT 5,500 FEET. *TR
NHTSA ODI #10374695
Mileage unknown · Oct 29, 2010
Engine And Engine Cooling
OIL GEL. *TR
NHTSA ODI #10362917
94,000 miles · Oct 2, 2010
Power Train
BEGAN WITH VERY ROUGH IDLE. TRANSMISSION THEN REFUSES TO SHIFT TO OVERDRIVE GEAR. *TR
NHTSA ODI #10358873
128,712 miles · Aug 19, 2010
Power Train
WHILE DRIVING MY LEXUS RX300 I HEARD A SLIGHT POP UNDER THE FRONT. AND THE CAR STOPPED. I WAS TOLD THE TRANSMISSION WENT BAD. THE CAR HAS 128,000 MILES. *TR
NHTSA ODI #10350693
176,000 miles · Aug 5, 2010
Power Train
MY CAR HAS A SHUDDER FROM 2 TO 3 SHIFT OF THE TRANSMISSION. I CALLED THE DEALER AND THEY TOLD ME IT WAS A SERVICE CAMPAIGN ABOUT THIS ISSUE, BUT BEING MY CAR IS OUT OF WARRANTY I WOULD HAVE TO PAY FOR PARTS AND LABOR TO FIX THIS ISSUE. *TR
NHTSA ODI #10347384
180,000 miles · Jul 20, 2010
Power Train
I BOUGHT A '99 LEXUS RX300 FOR MY WIFE AT 62K MILES. I DID ALL OF THE SCHEDULE MAINTENANCE INCLUDING THE EXPENSIVE STUFF (LIKE THE TIMING BELT CHANGE). UNBEKNOWNST TO ME, THE ENGINE REAR MAIN SEAL WAS LEAKING AT THE TIME THAT I PURCHASED IT. I FIGURED IT WAS SIMPLE AND "ITS A LEXUS, RIGHT?". I FOUND OUT THAT IT WOULD COST $1…
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I BOUGHT A '99 LEXUS RX300 FOR MY WIFE AT 62K MILES. I DID ALL OF THE SCHEDULE MAINTENANCE INCLUDING THE EXPENSIVE STUFF (LIKE THE TIMING BELT CHANGE). UNBEKNOWNST TO ME, THE ENGINE REAR MAIN SEAL WAS LEAKING AT THE TIME THAT I PURCHASED IT. I FIGURED IT WAS SIMPLE AND "ITS A LEXUS, RIGHT?". I FOUND OUT THAT IT WOULD COST $1700 TO FIX AND THAT IT WAS COMMON ON THIS MODEL. I IGNORED THE LEAK BECAUSE MY WIFE LOVED THE TRUCK OTHERWISE. UNRELATED TO THE OIL LEAK, AT 183,000 MILES I'M DRIVING ON A FAMILY VACATION WITH THE CAR ON CRUISE CONTROL AND THE TRANSMISSION SUDDENLY STARTS TO SLIP. I MANAGE TO MAKE IT MY DESTINATION, BUT AFTER RESEARCH AND GETTING DIAGNOSTICS FROM THE DEALERSHIP AND TRANS SHOPS, I FOUND IT WOULD COST $3000-$4000 TO FIX. I DECIDED TO FIX IT AND PAID $3700 FOR IT. NO SOONER THAN I TOOK OFF DRIVING, THE CAR STARTED SMOKING HORRIBLY AND WAS NOW SLIPPING IN 1,2, AND 3RD GEAR. THESE TRANSMISSIONS ARE A NIGHTMARE TO REPAIR, AND I WOULD RECOMMEND ANYONE THAT BUYS ONE TO COUNT YOUR LOSSES WHEN IT FAILS AND TRASH THE CAR. *TR
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE HEADLIGHTS AND TAILLIGHTS MAY NOT AUTOMATICALLY ILLUMINATE IN LOW AMBIENT LIGHT WHEN THE HEADLIGHT SWITCH IS PLACED IN THE "AUTO" POSITION.
Consequence & remedy
Consequence: VEHICLES FOLLOWING BEHIND MAY NOT SEE THE VEHICLE SINCE NO HEADLIGHTS AND TAILLIGHTS WOULD BE ILLUMINATED, INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSTALL A MODIFIED BODY ELECTRONIC CONTROL UNIT.
VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH THE OPTIONAL TRACTION CONTROL SYSTEM. DUE TO IMPROPER DESIGN OF THE REAR BRAKE TUBE DISTRIBUTION, IF ONE OF THE DUAL BRAKE LINES FAILS WHEN THE DRIVER APPLIES THE BRAKE, THE VEHICLE WILL FEEL UNSTABLE COMPARED TO VEHICLES WITH PROPER REAR BRAKE TUBE DISTRIBUTION.
Consequence & remedy
Consequence: THIS CONDITION CAN INCREASE THE RISK OF A CRASH.
Remedy: DEALERS WILL INSTALL MODIFIED BRAKE TUBES.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1
DP02004 · Engine Seizure
Opened Apr 30, 2002 · Closed Jun 20, 2002
Status: closed (inferred from source dates) · Engine And Engine Cooling
No summary supplied.
1999 Lexus RX300 Problems, Complaints & Recalls | Skip That Year