EZ Swap LLC services the Scion IQ in Phoenix, AZ, covering model years 2012 to 2015. If your IQ has a warning light, a strange noise or a safety recall question, our mechanics can diagnose it and give you a clear quote first.
To help IQ owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 24 owner complaints on file for the IQ and 1 safety recall campaign. The most-reported problem areas are engine (9), structure (7), air bags (6).
Most-Reported Scion IQ Problems
These problem areas come up most often in NHTSA owner complaints for the IQ (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 | 9 | 37% | |
| Structure | 7 | 29% | |
| Air Bags | 6 | 25% | |
| Vehicle Speed Control | 3 | 12% | |
| Power Train | 2 | 8% | |
| Steering | 2 | 8% | |
| Seat Belts | 1 | 4% | |
| Exterior Lighting | 1 | 4% |
Engine
9 of the 24 complaints (37%) 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.
Structure
7 of the 24 complaints (29%) mention body, doors and latches. Latch and body complaints affect security and safety. We inspect and repair door, hood and trunk hardware. See our auto repair page.
Air Bags
6 of the 24 complaints (25%) mention airbags and seat belts. Airbag and restraint issues are often tied to open safety recalls, which are repaired by the manufacturer at no cost to you. Check your VIN on NHTSA's recall lookup first, and we can help with related warning lights and diagnostics. See our auto repair page.
Scion IQ Complaints by Model Year
The IQ model years with the most NHTSA complaints on file are 2012, 2013, 2014. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2012 | 17 | |
| 2013 | 5 | |
| 2014 | 1 | |
| 2015 | 1 |
Scion IQ Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the IQ, 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 Scion.
| 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 IQ? 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.
Scion IQ Safety Recalls
NHTSA lists 1 recall campaign for the IQ in these model years, most often involving air bags. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2012 recall, Air Bags (campaign 12V528000): Toyota is recalling certain model year 2012-2013 Scion IQ vehicles manufactured July 31, 2011, through October 12, 2012.
Serious Incident Reports
Of the NHTSA complaints on file for the IQ, 7 involved a crash, 4 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 Scion IQ Reliable in Phoenix
Arizona heat is the hardest test a Scion will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a IQ 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 IQ 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 Scion IQ, a pre-purchase inspection shows what the paperwork does not.
Scion IQ Services at EZ Swap LLC
Get the details on our Phoenix Scion IQ repair service, or choose a service below.
Scion IQ FAQ
What are the most common problems with the Scion IQ?
Based on NHTSA owner complaints, the most-reported problem areas for the Scion IQ are engine (9), structure (7), air bags (6). Complaint counts reflect reports filed, not the share of vehicles affected.
Which IQ model years have the most complaints?
The IQ model years with the most NHTSA complaints on file are 2012, 2013, 2014. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Scion IQ?
NHTSA complaints rarely cite specific codes for the Scion IQ. 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 Scion IQ have any safety recalls?
NHTSA lists 1 recall campaign for the Scion IQ across model years 2012 to 2015. 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 Scion IQ in Phoenix?
Yes. EZ Swap LLC repairs and maintains Scion vehicles including the IQ, 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 Scion IQ?
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 Scion IQ 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 Scion 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.