Looking for Lexus NX 300 repair in Phoenix? We work on Lexus vehicles every day and cover the NX 300 across model years 2021, with honest diagnostics and quotes you approve before work begins.
To help NX 300 owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 17 owner complaints on file for the NX 300 and 0 safety recall campaigns. The most-reported problem areas are engine (3), visibility (3), fuel/propulsion system (2).
Most-Reported Lexus NX 300 Problems
These problem areas come up most often in NHTSA owner complaints for the NX 300 (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Engine | 3 | 17% | |
| Visibility | 3 | 17% | |
| Fuel/Propulsion System | 2 | 11% | |
| Electrical System | 2 | 11% | |
| Service Brakes | 2 | 11% | |
| Tires | 2 | 11% | |
| Exterior Lighting | 1 | 5% | |
| Fuel System, Gasoline | 1 | 5% |
Engine
3 of the 17 complaints (17%) mention the engine and cooling system. Engine and cooling complaints are best caught early in Phoenix, where heat pushes cooling systems and engine oil to their limits. We diagnose warning lights and check coolant, hoses and oil condition. See our check engine light diagnostics and oil change & maintenance pages.
Visibility
3 of the 17 complaints (17%) mention lighting and visibility. Lights, wipers and visibility items are quick to fix and are on every rideshare inspection checklist. We check them as part of our inspection prep. See our rideshare inspection prep page.
Fuel/Propulsion System
2 of the 17 complaints (11%) mention the fuel system. Fuel system problems can cause stalling, hard starts and poor mileage. We test fuel delivery and related sensors to find the real cause. See our no-start diagnostics and check engine light diagnostics pages.
Lexus NX 300 Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the NX 300, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Lexus.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your NX 300? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Serious Incident Reports
Of the NHTSA complaints on file for the NX 300, 1 involved a crash, 1 involved a fire, 2 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Lexus NX 300 Reliable in Phoenix
Arizona heat is the hardest test a Lexus will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a NX 300 that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for NX 300 owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Lexus NX 300, a pre-purchase inspection shows what the paperwork does not.
Lexus NX 300 Services at EZ Swap LLC
Get the details on our Phoenix Lexus NX 300 repair service, or choose a service below.
Lexus NX 300 FAQ
What are the most common problems with the Lexus NX 300?
Based on NHTSA owner complaints, the most-reported problem areas for the Lexus NX 300 are engine (3), visibility (3), fuel/propulsion system (2). Complaint counts reflect reports filed, not the share of vehicles affected.
Which NX 300 model years have the most complaints?
The NX 300 model years with the most NHTSA complaints on file are 2021. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Lexus NX 300?
NHTSA complaints rarely cite specific codes for the Lexus NX 300. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Lexus NX 300 have any safety recalls?
NHTSA lists 0 recall campaigns for the Lexus NX 300 across model years 2021. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Lexus NX 300 in Phoenix?
Yes. EZ Swap LLC repairs and maintains Lexus vehicles including the NX 300, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Lexus NX 300?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Lexus NX 300 in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Lexus Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.