Problems · NHTSA complaints

2012 Lexus RX350 problems

Owners filed 45 complaints about the 2012 Lexus RX350 with NHTSA between Dec 2011 and Sep 2026. The most-cited component is vehicle speed control (11).

Complaints
45
Filed with NHTSA
Crashes
11
Reported by owners
Fires
2
Reported by owners
Injuries
13
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Vehicle speed control11
  2. Engine7
  3. Electrical system7
  4. Service brakes6
  5. Air bags5
  6. Power train5
  7. Electronic stability control (esc)4
  8. Structure3
  9. Steering2
  10. Service brakes, hydraulic2
  11. Suspension2
  12. Seat belts2
  13. Fuel system, gasoline2
  14. Forward collision avoidance1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Nov 10, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20112
20124
20137
20142
20153
20162
20174
20181
20195
20203
20210
20222
20231
20240
20255
20264

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Vehicle speed control

11 reports7 crashes
“October 20, '23 Our recent DEAD STOP! Whistle blower! Did you know that when the alternator goes out on a Lexus, that the car draws down energy from the battery to keep the car going? That's only for about a mile or so, then the car shuts down! You can't steer and THE ENGINE STOPS RUNNING and you have no power as you come to a dead stop, whether on the freeway, or one lane mountain pass road, where we would have been later. What would we have done? Scary! Luckily, our Lexus stalled on a city street nearing our on-ramp to the freeway. (needing to be towed.) Lexus has a serious engineering-defective-design-flaw that probably is responsible for accidents. Thanks, [XXX] . Pass it on please!”
Owner complaint to NHTSAFiled Oct 20, 2023Power train, Vehicle speed control, EngineODI 11551111

Engine

7 reports1 crash1 fire
“Alternator completely shut down on Sunday,XXX. Battery warning light came on out of the blue on Sat, XXX at 8:45 PM in Independence, MO in front of Walmart on [XXX], had to go autozone on [XXX] in [XXX]. Test came back showing Alternator failure. Now power steering is gone and prob battery too. All interior electric systems shut down also. Headlight bulbs became affected within 1 month of purchase from dealership on XXX. Replacement bulbs for dims done last week.”
Owner complaint to NHTSAFiled Sep 14, 2026Steering, EngineODI 11764212

Electrical system

7 reports2 fires
“Odometer Fraud. The contact owns a 2012 Lexus RX350. The contact purchased the vehicle, and it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of the purchase, the mileage was 127,832. The contact stated that at the time of registration, it was discovered that the mileage was 257,193.”
Owner complaint to NHTSAFiled Jan 2, 2026Electrical systemODI 11708430

Service brakes

6 reports2 crashes
“TL* THE CONTACT OWNS A 2012 LEXUS RX330. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, THE ABS AND BRAKE SYSTEM WARNING LIGHTS ILLUMINATED WHEN THE BRAKE PEDAL WAS DEPRESSED. THE CONTACT STATED THAT THE VEHICLE HESITATED TO RESPOND. THE VEHICLE WAS TAKEN TO AUDI PENSACOLA LOCATED AT 6303 PENSACOLA BLVD, PENSACOLA, FL 32505, (844) 313-0046, AND THE DEALER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. UPON INVESTIGATION, THE CONTACT ASSOCIATED THE FAILURE WITH NHTSA CAMPAIGN NUMBER: 14V054000 (SERVICE BRAKES, HYDRAULIC, ELECTRONIC STABILITY CONTROL), HOWEVER THE VIN WAS NOT INCLUDED. THE MANUFACTURER WAS INFORMED OF FAILURE. THE FAILURE MILEAGE WAS 110,000.”
Owner complaint to NHTSAFiled Jul 20, 2020Service brakesODI 11340501

Air bags

5 reports3 crashes
“I WAS BROADSIDED ON MY DRIVERS DOOR AND NOT 1 AIRBAG WENT OFF. THE OFFICER SAID SHE WAS DRIVING AT LEAST 40MPH. I HAD LEFT THE STOP SIGN TO MAKE MY LEFT HAND TURN WHEN IT OCCURED. MY CAR WAS TOTALED”
Owner complaint to NHTSAFiled Jan 3, 2020Air bagsCrash reportedODI 11297031

Power train

5 reports
“JULY 11TH 2017 AT AROUND 220PM PST, THE LEXUS RX350 2012, EXPERIENCE A VERY DANGEROUS FAILURE. EARLIER THAT WEEK I NOTICED ISSUE WITH THE BATTERY, WHERE IT WOULD TAKE ONE OR MORE PUSHES TO THE START BUTTON FOR THE CAR TO TURN ON. BUT ON THIS DATE, I HAD JUST PARKED THE CAR ON A ROAD WITH AN SLIGHT INCLINE, I DID NOT ENABLE THE EMERGENCY BREAK THE CAR WAS TURNED OFF AND THE KEYS WITH ME. I HAD DROPPED OFF A FRIEND AND HELPED HER TAKE A FEW THINGS INSIDE THE HOUSE. AFTER RETURNING TO THE CAR, I TRIED MULTIPLE ATTEMPTS TO TURN ON THE CAR (3 OR 4) AND ON THE LAST ATTEMPT THE CAR ROLL DOWN THE HILL INSTEAD OF TURNING ON . I WAS UN-ABLE TO APPLY THE BREAKS AND IN A STATE OF SHOCK DID NOT APPLY THE EMERGENCY BREAK. THE CAR ROLL ACROSS A ROAD, DOWN A BANK AND CAME INCHES TO HITTING A HOME. AFTER THE CAR WAS TOWED UP THE BANK IT WAS FOUND THE CAR WAS IN GOOD SHAPE BUT THE BATTERY WAS DEAD. I WAS IN A STATE OF SHOCK AND MY ENTIRE BODY TENSED AND I WAS SUFFERING FROM A SEVERE HEADACHE. WE CALLED IN THE CALIFORNIA HIGHWAY PATROL 1722 EAST MAIN STREET EL CAL JON 92021 DATE: 7/11/17 - 14:40 NCIC NUMBER: 9680 OFFICER ID NUMBER 21588 THERE AFTER WE CALLED CONTACTED LEXUS TO…”
Owner complaint to NHTSAFiled Jul 22, 2017Power train, Electrical system, Service brakesODI 11010062
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.