LexusRX450H2015Overview/lexus/rx450h/2015/base/

2015 Lexus RX450H

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2015 RX450H.

Body SUVTransmission Automatic (AV-S6)

The 2015 Lexus RX450H is an SUV equipped with an AV-S6 automatic transmission and EPA-estimated fuel economy of 31/28/29 mpg, its powertrain requiring 6.4 quarts of 0W-20 oil for routine service. Within the model’s 2011–2023 complaint history, this model year accumulated 25 owner complaints classified primarily as “Unknown Or Other”—significantly fewer than the 55 recorded for the 2017 peak but notably higher than the single complaint logged for 2023—while carrying zero recalls. That data positions the 2015 model as a relatively moderate point in the RX450H’s reliability timeline, offering researchers a benchmark for mid-cycle stability prior to the later years’ decline in reported grievances.

Model year202520242022202120202019201820172015

Quick specs

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

Engine oil capacity6.4 qtOEM · verified
Engine oil type0W-20OEM · verified
EPA fuel economy31/28/29 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses a BCI S55D23R Hybrid · 360 CCA battery, OE oil filter 9030179006. 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 S55D23R Hybrid · 360 CCAOEM · verified
Tail / brake / turnHZSWOEM · verified
Tire sizeP235/60R18, P235/55R19OEM · verified
Wheel / rim7.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter9030179006 alt 9672335028
Engine air filter1780131141
Spark plug9091901247
Battery2880031293
Front wiper blades8522252170 alt 852120E020
Serpentine belt99367K0810
Thermostat90916A3002 alt 1632562010
Cabin air filter8713907020 alt 8713950100

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (AV-S6)

Dimensions & weight NHTSA vPIC

Overall length187.8 in
Overall width74.4 in
Overall height67.7 in
Wheelbase107.9 in
Curb weight4652 lb
Track (front / rear)64.2 / 63.8 in
Weight distribution (front / rear)54/46

Ratings & economy EPA / vPIC

EPA city / highway / combined31 / 28 / 29 mpg
DrivetrainFront-Wheel Drive
Recommended fuelPremium Gasoline

Service quick specs OEM factory data

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

This engine holds 6.4 qt of 0W-20 engine oil, SAE J1703 · DOT 3 brake fluid. Torque the oil drain plug to 29.0-30.0 ft-lbs. The firing order is 1-2-3-4-5-6.

Lubricants & capacities

Automatic Transmission FluidToyota Hybrid Transaxle Fluid
Automatic Transmission Fluid CapacityAdd transaxle fluid until the transaxle fluid level is between 0 and 5 mm (0 and 0.197 in.) from the bottom lip of the filler plug opening.
Brake FluidSAE J1703 · DOT 3
Engine CoolantHOAT
Engine Oil0W-20
Engine Oil Capacity6.4 qt
Fuel Tank Capacity17.2 gallons
Power Steering FluidEPS

Engine torques

Crankshaft Pulley and/or Damper Bolts184 ft-lbs
Engine Oil Pan Drain Plug29.0-30.0 ft-lbs
Oil Pump to Cylinder BLock Bolts/Studs81.0 inch lbs. ft-lbs

Chassis torques

Front Wheel Hub217 ft-lbs
Front Wheel Hub217 ft-lbs
Front Wheel Hub Bearing Housing BoltsAfter tightening, stake lock nut.
Front Wheel Hub217 ft-lbs
Front Wheel Hub Bearing Housing BoltsAfter tightening, stake lock nut.
Rear Wheel Hub217 ft-lbs
Rear Wheel Hub Bearing Housing BoltsAfter tightening, stake lock nut.

Ignition

Cylinder Firing Order1-2-3-4-5-6
Curb Idle Speed (No Load)650 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug ManufacturerLexus
Spark Plug Gap.039 - .043 (4) in
Spark Plug Torque13 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.00-1.21 lbs
Oil TypeND 11 Oil
Oil Capacity4.10-4.55 oz
Standard BCI Group NumberS55D23R Hybrid
Standard BCI Cranking Performance360 cca

Service checks

RPM44-50 @ idle rpm
Residual Pressure21 After 5 min, engine off psi
Fuel Pump Pressure Minimumpsi
RPM28-50 @ idle rpm
Residual Pressure21 After 5 min, engine off psi
RPM55-61 @ idle rpm
Residual Pressure21 After 5 min, engine off psi
Engine Compression109-145 PSI. 15 Maximum variation PSI

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 25; Rear: 20 /; Front: 25; Rear: 20
Brake Caliper Carrier to Hub Bolt TorqueFront: 77; Rear: 58 /; Front: 77; Rear: 58
ABS Sensor Torque7.5 / NS
Minimum Pad ThicknessFront: 0.039; Rear: 0.040 in
Vented Rotor Minimum Thickness for ReplacementFront: .984; Rear: .335
Maximum Rotor RunoutFront: .002; Rear: .0059
Maximum Drum DiameterParking brake 8.310

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
118.0 ft. lbs., Step 2: 9018 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 10,000 mi; coolant every 50,000 mi. The big-interval services (every 50,000 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.

At 5,000 miUniversal Vehicle Operation (inspect all fluid levels)
Every 5,000 miBrake System (inspect) · Floor Mat (inspect) · Tire & Wheel Assembly (rotate) · Universal Vehicle Operation (road test) · Windshield Wiper Blade (inspect)
Every 10,000 miCabin Air Filter (replace) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Universal Vehicle Operation (inspect all fluid levels)
Every 15,000 miAccessory Drive Belt (inspect) · Brake Line (inspect) · CV Joint Boot (inspect) · Driveshaft Flange Yoke (torque) · Engine Coolant System (inspect fluid level) · Exhaust System (Complete) (inspect)
Every 30,000 miBrake Hydraulic System (drain, refill & bleed) · Brake Rotor (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect)
Every 50,000 miEngine Coolant System (drain, flush & refill)
At 60,000 miAccessory Drive Belt (inspect)
At 100,000 miEngine Coolant System (drain, flush & refill)
Every 100,000 miTransmission Assembly (inspect fluid level)

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 2015 Lexus RX450H sits at a transitional point in its generation's federal record, with 25 complaints and zero recalls—figures that are moderate by the standards of this platform. Complaint volume across the generation (2011–2019) oscillates considerably, from a low of 13 in 2014 to a high of 55 in 2017, and the 2015's count falls comfortably in the middle of that range; however, it precedes a notable upward shift, with 2016 logging 34 complaints and the generation's first two recalls, followed by 2017's peak of 55 complaints. The 2015 model also marks the beginning of a steady decline in technical service bulletins, dropping from 239 in 2014 to 202, a trend that continues through 2019's 119—though the data does not specify whether this reflects fewer identified issues or reduced manufacturer attention as the generation ages. Notably, every year from 2011 through 2019 carries one open investigation, so the 2015 is not uniquely burdened in that regard. The target year's top complaint areas are led by "Unknown or Other" (5) and "Steering" (4), with 2 crash-related complaints and 1 fire complaint, but the data does not identify root causes for any of these categories. Given its zero recalls, mid-range complaint volume, and position just before the generation's most problematic years, the 2015 RX450H represents a reasonable but not standout choice—buyers should prioritize a pre-purchase inspection focused on steering and engine systems and verify whether any open TSBs have been addressed.

0
Open recalls
NHTSA campaigns
202
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
25
Owner complaints
2 involved a crash · 1 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★
Frontal★★★★
Side★★★★★
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 25 complaints on record, top 8 components.

Unknown Or Other5
Steering4
Engine2
Power Train1
Power Train,Electrical System,Service Brakes1
Lane Departure1
Engine,Lane Departure1
Power Train,Engine,Lane Departure1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 202 bulletins on record with NHTSA.

BulletinDateComponentSummary
L-SB-0030-24 Rev22025-12-15StructureSome 2005 – 2026 Lexus vehicles that have undergone water intrusion may exhibit a…
L-SB-0043-23 Rev12025-06-13Electrical SystemThe air conditioning dye injection tool kit has been developed to aid in identifying the…
L-SB-0017-19 Rev12025-02-07StructureSome 2010 – 2026 model year Lexus vehicles may exhibit paint stains after the removal of…
L-SB-0017-19 Rev12025-02-07StructureSome 2010 – 2026 model year Lexus vehicles may exhibit paint stains after the removal of…
L-SB-0030-24 Rev12024-07-29StructureSome 2005 – 2024 Lexus vehicles that have undergone water intrusion may exhibit a…

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 RX450H. 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 2015 RX450H take?

6.4 qt of 0W-20 ILSAC multigrade engine oil, per the factory manual.

Does the 2015 RX450H have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the RX450H get?

EPA figures are 31 city / 28 highway / 29 combined mpg.