LexusGX4702003Overview/lexus/gx470/2003/base/

2003 Lexus GX470

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 GX470.

Body SUVTransmission Automatic 5-spd

The 2003 Lexus GX470 is an SUV equipped with a 5-speed automatic transmission and an engine requiring 6.6 quarts of 10W-30 / 5W-30 API oil, delivering EPA fuel economy ratings of 14/17/15 mpg. Within the 2003-2009 model complaint history, this year logged 52 total owner complaints focused primarily on the Power Train alongside 2 recalls. This volume places the model below the generation's peak of 85 reports in 2004 but above the lowest count of 1 in 2009. This positions the 2003 model as a moderate reliability candidate within the lineage, situated between the generation's most and least problematic years of the run.

Model year2009200820072006200520042003

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity6.6 qtOEM · verified
Engine oil type10W-30 / 5W-30 APIOEM · verified
Lug nut torque83 ft-lbsOEM · verified
EPA fuel economy14/17/15 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 27F · 710 CCA battery, OE oil filter 90915YZZD3. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 27F · 710 CCAOEM · verified
Tire sizeP265-65SR17OEM · verified
Wheel / rim7.5-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filter90915YZZD3
Engine air filter1780150040
Fuel filter2330050120
Spark plug9008091180
Front wiper blades8521260191 alt 8522248040
Serpentine belt9091602586
Thermostat9091603100 alt 1634650010

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 5-spd

Ratings & economy EPA / vPIC

EPA city / highway / combined14 / 17 / 15 mpg
Drivetrain4-Wheel or All-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 6.6 qt of 10W-30 / 5W-30 API engine oil, GL-5 · 80W-90 in the differential. Torque lug nuts to 83 ft-lbs, the oil drain plug to 29.0 ft-lbs. The firing order is 1-8-4-3-6-5-7-2.

Lubricants & capacities

Differential Gear OilGL-5 · 80W-90
Differential Gear Oil Capacity3 Pints
Engine Oil10W-30 · API · 5W-30
Engine Oil Capacity6.6 qt
Transfer Case Fluid75W-90 · GL-5
Transfer Case Fluid Capacity3 Pints

Engine torques

Crankshaft Pulley and/or Damper Bolts181 ft-lbs
Engine Oil Pan Drain Plug29.0 ft-lbs

Chassis torques

Lug Nuts83 ft-lbs
Transfer Case Fill Plug27.0 ft-lbs
Transfer Case Drain Plug27.0 ft-lbs
Front Wheel Hub173 ft-lbs

Ignition

Cylinder Firing Order1-8-4-3-6-5-7-2
Curb Idle Speed (No Load)700 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug Gap0.039-0.0.043 in
Spark Plug Torque13.0 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant CapacitySingle Unit, 1.25-1.38; dual unit, 1.69-1.82. lbs
Oil GroupPAG
Oil Type46
Oil Capacity4.50 oz
Standard BCI Group Number27F
Standard BCI Cranking Performance710 cca

Service checks

Pressure Test17 psi
Radiator Cap Pressure Relief14-18 psi
Thermostat Opening Temperature176-183 °F
Residual Pressure21.0 psi
Injector Primary Resistance13.4-14.2 @ 68 degreesF ohms
Engine Compression142-192 PSI. 14 maximum variation PSI.

Brakes

Torque to Knuckle91 ft-lbs / 77 ft-lbs
Torque Caliper to Bracket65 ft-lbs
Minimum Pad ThicknessFront: 0.039; Rear: 0.040 in
Rotor Runout Limit0.002 in / 0.0079 in
Rotor Nominal Thickness From1.102 in / 0.709 in
Rotor Nominal Thickness To1.102 in / 0.709 in
Rotor Discard at or Under1.024 in / 0.63 in

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs at 120,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 miEngine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 15,000 miAccessory Drive Belt (inspect) · Axle Shaft Oil Seal (inspect) · Body Latches, Locks & Hinges (inspect) · Brake System (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (replace)
Every 30,000 miBrake Hydraulic System (drain, refill & bleed) · Drive Axle Assembly (drain & refill) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Fuel Line (inspect) · Fuel Tank (inspect)
At 60,000 miAccessory Drive Belt (inspect)
Every 60,000 miEngine Valves (inspect valve lash) · Fuel Evaporative Canister (inspect)
Every 90,000 miTiming Belt (replace)
At 120,000 miSpark Plugs (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2003 Lexus GX470 sits at the beginning of its generation with 52 federal complaints—lower than the 85 reported in 2004 but higher than the sharp decline seen from 2005 onward. Recalls for the 2003 model year total two, matching the peak for this generation, while subsequent years (2004–2006) saw only one recall annually, and later years (2007–2008) had none. Complaint trends reveal a concentration in the power train (9) and suspension (4), though the data doesn’t specify root causes, and crash-related complaints (6) are notable but not dominant. The 2003 model’s recall count is slightly elevated compared to the rest of the generation, yet its complaint volume is moderate and precedes a period of improved reliability in later years. Technical Service Bulletins (TSBs) remain consistently high across all years, suggesting persistent but addressable issues rather than systemic flaws. **Takeaway:** While not the most trouble-free year, the 2003 GX470’s record is unremarkable for its era, making it a reasonable buy if service history confirms recall and TSB resolutions.**

2
Open recalls
NHTSA campaigns
159
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
52
Owner complaints
6 involved a crash · 1 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 52 complaints on record, top 8 components.

Power Train9
Unknown Or Other6
Structure4
Suspension4
Engine & Engine Cooling4
Air Bags2
Vehicle Speed Control,Electronic Stability Control (Esc)2
Vehicle Speed Control2

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 2 campaigns on record for this vehicle.

03V031000Equipment:Other:LabelsReported 11/02/2003

CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF PART 567, "CERTIFICATION." THE INCORRECT GROSS VEHICLE WEIGHT RATING (GVWR) DATA WAS PRINTED ON THE CERTIFICATION REGULATION LABEL. THE GVWR IS… Remedy: AS EACH LABEL IS VEHICLE IDENTIFICATION NUMBER SPECIFIC, OWNERS WILL BE REQUESTED TO CONTACT THEIR LOCAL LEXUS DEALER FIRST TO PLACE AN ORDER FOR THE CORRECTED LABEL. ONCE THE…

03V088000Seats:Mid/Rear AssemblyReported 10/03/2003

ON CERTAIN VEHICLES EQUIPPED WITH THE LEXUS LINK SYSTEM, IT MAY BE DIFFICULT TO LOCK ONE OF THE TWO LATCHES ON THE BOTTOM OF THE MIDDLE ROW LEFT REAR SEAT (LARGER SIDE OF THE BENCH SEAT DIRECTLY BEHIND THE DRIVER). DUE… Remedy: DEALERS WILL REMOVE THE LLS CASE PANELS AROUND THE SEAT STOPPER. OWNER NOTIFICATION BEGAN APRIL 8, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON…

Technical service bulletins NHTSA · verified

Showing 5 of 159 bulletins on record with NHTSA.

BulletinDateComponentSummary
L-SB-0020-242024-04-19StructureVehicles may occasionally be subjected to contamination by airborne iron particles shed…
L-SB-0021-242024-04-19StructureLexus vehicles are currently protected with RapgardTM protective film designed to protect…
L-SB-0022-242024-04-19StructureAcid rain results from rainwater or other airborne moisture that become acidic due to…
L-SB-0024-242024-04-19StructureThe condition known as acid rain is caused by airborne chemicals or particles in the…
L-SB-0020-242024-04-19StructureVehicles may occasionally be subjected to contamination by airborne iron particles shed…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific GX470. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2003 GX470 take?

6.6 qt of ABOVE 0 F: 10W-30 API, BELOW 100 F: 5W-30 API, per the factory manual.

Does the 2003 GX470 have open recalls?

NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the GX470 get?

EPA figures are 14 city / 17 highway / 15 combined mpg.