Is the 2003 Toyota Highlander a bad year?
258 owner complaints to NHTSA. Engine complaints: 86, 6.1× a quiet Highlander year.
Keep it, but watch the engine
Half of the engine complaints for this year were filed at 90k–137k miles, where you are now.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2003 Highlander owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 109,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| EngineSTANDS OUT | 82 (32%) | 90k–135k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Brakes | 33 (13%) | 47k–126k miles · around this mileage | Brake pad replacement (one axle) $115–$390 · Brake pads and rotors replacement (one axle) $200–$1,084 |
| Electrical system | 15 (6%) | 58k–118k miles · around this mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Exterior lighting | 15 (6%) | 81k–136k miles · around this mileage | — |
| Air bags | 9 (3%) | 41k–155k miles · around this mileage | — |
| Visibility and wipers | 34 (13%) | 45k–101k miles · mostly behind | — |
| Speed control | 28 (11%) | 56k–98k miles · mostly behind | — |
| Body structure | 18 (7%) | 3k–75k miles · mostly behind | — |
| Transmission and drivetrain | 13 (5%) | 8k–90k miles · mostly behind | — |
| Steering | 6 (2%) | 33k–84k miles · mostly behind | — |
| Fuel system | 10 (4%) | too few with a mileage | — |
| Tires | 7 (3%) | too few with a mileage | — |
| Engine and cooling | 6 (2%) | too few with a mileage | — |
| Suspension | 6 (2%) | too few with a mileage | — |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 109,000 miles. Not a quote.
What owners reported alongside their complaints
Of 258 complaints: 33 mention a crash · 1 mentions a fire · 10 report an injury · 6 say the car was towed.
No complaints in the last 12 months; the newest was filed in May 2023.
Counts of what owners wrote in their complaints, not verified by anyone.
In owners' own words
2003 Toyota highlander 2.4L 4-CYLINDER engine, 108,000 miles, developed coolant leak on the back side of the top of the engine, adjacent to an insulator pad at the back of the engine block.
2003 highlander , 2.4 engine started leaking antifreeze on driveway. Pressure tested ok. Head gasket leaking due to stripped head bolts.
I've had my Toyota highlander for about 11 years now. I got it as brand new car and I am the single owner and well maintained car.
Unedited excerpts from complaints filed with NHTSA, chosen by mileage (nearest 109,000 miles), not by content. Unverified.
Recalls for the 2003 Toyota Highlander: 2
Certain sport utility vehicles have a child protection lock (Cpl) system on both of the rear side doors. This condition could allow the door to be opened with the inside while the operator believes that the cpl was activated. If the door were opened from the inside while the vehicle was in motion, an occupant could fall out and be injured.
On certain sport utility vehicles equipped with five factory alloy wheels (Model 6934 and 6936), with factory llat, and with port installed WR4, four alloy wheel upgrade processed at the jacksonville, florida port and distributed by southeast Toyota distributors in the states of alabama, florida, georgia… If the spare tire/wheel is installed on the vehicle using the wheel nuts provided for the upgrade alloy wheel, damage to the wheel could result and could eventually lead to a loose wheel.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from Toyota: 54
Repair instructions Toyota sent its dealers for symptoms seen in the shop on the 2003 Toyota Highlander. Ask a dealer or mechanic for a bulletin by its number.
The purpose of this service bulletin is to provide information regarding the installation of the correct torque converter bolts during automatic…
The purpose of this bulletin is to provide precautions to follow when installing an automatic transmission/transaxle assembly to avoid MIL "ON" shifting issues…
Low battery voltage can contribute to a MIL "ON" condition for P0335 (Crankshaft Position Sensor Circuit) and/or P0340…
Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels…
Neighbouring years
2002 Highlander: 301 complaints, keep it · 2004 Highlander: 286 complaints, keep it, but watch the transmission.
Every Toyota Highlander year
2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026 · All Highlander years side by side
Other Toyota models: Toyota 4Runner · Toyota Avalon · Toyota C-HR · Toyota Camry · Toyota Camry Hybrid · Toyota Camry Solara · Toyota Celica · Toyota Corolla · Toyota Corolla Cross · Toyota Corolla Matrix · Toyota Echo · Toyota FJ Cruiser · Toyota Grand Highlander · Toyota Highlander Hybrid · Toyota Matrix · Toyota Prius · Toyota Prius c · Toyota Prius v · Toyota RAV4 · Toyota RAV4 Hybrid · Toyota RAV4 Prime · Toyota Sequoia · Toyota Sienna · Toyota Sienna Hybrid · Toyota Tacoma · Toyota Tundra · Toyota Venza · Toyota Venza Hybrid · Toyota Yaris. All makes and models.
Questions
Is the 2003 Toyota Highlander a bad year?
258 owner complaints to NHTSA. Engine complaints: 86, 6.1× a quiet Highlander year. At 109,000 miles the tool says: Keep it, but watch the engine. Half of the engine complaints for this year were filed at 90k–137k miles, where you are now.
What are the most common problems with the 2003 Toyota Highlander?
By owner complaints to NHTSA: engine (82), brakes (33), electrical system (15), exterior lighting (15), air bags (9). Half of the engine complaints were filed between 90k–137k miles.
How many recalls does the 2003 Toyota Highlander have?
2 recall campaigns list this model year: Latches and locks (NHTSA 04V-181), Wheels (NHTSA 02V-339). A recall may cover only some cars; check by VIN at nhtsa.gov/recalls.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.