2003 Lexus RX300 Electrical system Problems
- Complaints
- 3about this part
- Share
- 12%of 25 total for the year
- Median mileage
- 68,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2003 Lexus RX300, 12% of the 25 complaints for this model year. Where a mileage was given, the median is 68,000 miles. 1 of these say a crash was involved, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I own a 2003 Lexus RX300. After I had came from a completed stop while depressed on the accelerator pedal, the brakes began to lock with the ABS brake light illuminated. The vehicle was diagnosed by an independent mechanic who stated the av pump failed or that it maybe something with the electronic control module. The vehicle was not repaired. The manufacturers were not made aware of the failure. The failure mileage was 320,000.”
NHTSA complaint #10935552, filed 2016-12, 320,000 miles“I called my local Lexus three times prior to june, 2012 regarding lights suddenly illuminating on the dashboard. I had a recurring issue where the check engine and vsc warning lights would illuminate. Each time the customer service agent told me that the lights would go off when I refueled. Three times the lights did go off (after several days), but once I had to have the dealer reset them. The most recent occurrence resulted in the dealer telling me I needed the air fuel and air flow sensors replaced, a repair which cost over $750.00. …”
NHTSA complaint #10472551, filed 2012-08, 68,000 milesRelated service bulletins
- 10131726Jan 22, 2018TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. L-SB-0021-14. * Applicability has been updated to include applicable 2018…
- 10111398Apr 10, 2015LSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many…
- 10111205Apr 10, 2015LSB: When servicing interior electrical switches and components, please note the precautions in this bulletin to avoid damaging electrical components and switches. Many…
- 10109449Oct 23, 2014TSB: 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…
- 10205331Jul 7, 2014Immobilizer and Smart Key Reset
- 10205330Jul 7, 2014Immobilizer and Smart Key Reset
- 10205329Jul 4, 2014Immobilizer and Smart Key Reset.
- 10205327Jun 12, 2014Techstream ECU Flash Reprogramming Procedure.
- 10132777Jun 12, 2014TSB: 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…
- 10133866Feb 27, 2013Navigation/ Multi Info Display Day Mode Operation
Electrical system: other model years
Other parts of the 2003 Lexus RX300
7 complaintsVehicle speed control
5 complaintsAir bags
3 complaintsEngine cooling
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsElectronic stability control
2 complaintsEquipment
2 complaintsBrakes
1 complaintsEngine
1 complaintsFuel system
1 complaintsOther or unknown
1 complaintsSuspension
1 complaints
← All problems reported for the 2003 Lexus RX300
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology