Engine & identification
Vehicle identification
| No. of cylinders Type | 6/DOHC |
|---|---|
| Capacity (Fiscal) cc | 3456 |
| Compression ratio :1 | 10,8 |
| Suitable for unleaded petrol | Yes |
| Minimum octane rating RON | 95 |
| Ignition system Make | Toyota |
| Ignition system Type | DIS |
| Ignition system Description | Map-DI |
| Trigger location | Cam/Crankshaft |
| Fuel system Make | Toyota |
| Fuel system Type | SFI |
| Fuel system Description | MFI-s |
| Air metering Type | Mass |
| Combined ignition and fuel ECM | Yes |
| Diagnostic socket | Yes |
Ignition system
| Ignition coil supply voltage + with ballast V | 12,0 |
|---|
Firing order
The firing order for the Toyota Highlander 3.5 (2014–2020) is 1-2-3-4-5-6.
| Firing order | 1-2-3-4-5-6 |
|---|
Valve clearances
Valve clearances on the Toyota Highlander 3.5 (2014–2020) are hydraulic — they self-adjust, so no manual clearance figure applies.
| Valve clearance - INLET mm | Hydraulic |
|---|---|
| Valve clearance - EXHAUST mm | Hydraulic |
Engine oil & fluids
Engine oil
The Toyota Highlander 3.5 (2014–2020) takes 6.1 litres of engine oil with the filter.
See the reference table for the complete engine oil entries and their conditions.
Transfer box
See the reference table for the complete transfer box entries and their conditions.
Coolant
See the reference table for the complete coolant entries and their conditions.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | SL |
| Ambient temperature range | -18°C➞ |
| Engine oil grade SAE | 10W-30 |
| Engine oil classification API/ACEA | SL |
| Ambient temperature range | -12°C➞ |
| Engine oil grade SAE | 15W-40 |
| Engine oil classification API/ACEA | SL |
| Ambient temperature range | -7°C➞ |
| Engine oil grade SAE | 20W-50 |
| Engine oil classification API/ACEA | SL |
| Engine with filter(s) litres | 6.1 |
| Other lubricants and capacities | |
| Automatic transmission fluid Type | Toyota ATF WS |
| Automatic transmission (drain & refill) litres | — |
| View more information | — |
| If 'D' shift indicator flashes (transmission fluid temperature is above 45°C): Switch ignition OFF. Allow transmission fluid to cool, then repeat steps 2-7. | |
| Differential oil grade - rear SAE | 75W-85 |
| Differential oil classification - rear | GL-5 |
| Differential rear litres | 0.5 |
| Transfer box oil grade SAE | 75W-85 |
| Transfer box oil classification | GL-5 |
| Transfer box litres | 0.8 |
| Coolant Type | Toyota SLLC |
| Coolant Colour | Pink |
| Cooling system - total capacity litres | 11.2 |
| Brake fluid Type | DOT 3 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Toyota Highlander 3.5 (2014–2020) are replaced at a minimum thickness of 25 mm (ventilated) front and 8,5 mm rear.
| Minimum disc thickness for replacement - ventilated Front | 25 mm |
|---|---|
| Minimum disc thickness for replacement Rear | 8,5 mm |
Brake disc and drum dimensions
| Disc runout Front | 0,05 mm |
|---|---|
| Disc runout Rear | 0,15 mm |
| Minimum pad thickness Front | 1 mm |
| Minimum pad thickness Rear | 1 mm |
| Parking brake travel No. of notches | 8-11 |
Service & electrical
Battery
The Toyota Highlander 3.5 (2014–2020) uses a 12 V, 55 Ah battery.
| Battery V/RC(Ah) | 12 (55) |
|---|
Tuning and emissions
| Ignition timing - basic BTDC °Engine/rpm | 10±2/650 Not adjustable |
|---|---|
| Ignition advance checks °Engine/rpm | ECM Controlled |
| Idle speed rpm | 650±50 Not adjustable |
| Oil temperature °C | 80 |
| CO level at idle speed - tailpipe Vol. % CO | 0,3 Max Not adjustable |
| HC level at idle speed ppm | 100 |
| CO2 level at idle speed Vol. % CO2 | 14,5-16 |
| O2 level at idle speed Vol. % O2 | 0,1 |
| Increased idle speed for CO test rpm | 2300-2800 |
| CO content at increased idle speed Vol. % | 0,2 |
| Lambda at increased idle λ | 0,97-1,03 |
Service checks and adjustments
| Compression pressure bar | 10,0-13,0 |
|---|---|
| Oil pressure bar/rpm | — |
| Oil pressure | |
| Radiator cap bar | 0,59-1,23 |
| Thermostat opens °C | 80-84 |
Fuel system
| Fuel main pump delivery pressure bar | 39-42 |
|---|---|
| Engine coolant temperature (ECT) sensor Ohm/°C | 2320-2590/20 |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm | 1630-2740 |
| Injector Ohm | 11,6-12,4 |
| Lambda sensor (Oxygen) heater Ohm | 11,0-16,0 |
| Throttle motor Ohm | 0,3-100 |
Spark plugs
| Spark plugs Original equipment | Denso |
|---|---|
| Spark plug Type | FK20HR11 |
| Electrode gap mm | 1,0-1,1 |
Tightening torques
| Cylinder head instructions | — |
|---|---|
| Cylinder head | |
| View more information | — |
| Cylinder head bolts | |
| Tighten | 36 Nm |
| Tighten | 90° |
| Tighten | 90° |
| Other engine tightening torques | |
| Main bearings Renew bolts/nuts | — |
| View more information | — |
| Bolts 20 and 23: Bolt length = 45 mm | |
| Big end bearings Renew bolts/nuts | — |
| View more information | — |
| Big end bearings | |
| Big end bearings Stage 1 | 25 Nm |
| Big end bearings Stage 2 | 90° |
| Oil pump to cylinder block | 9 Nm |
| Sump bolts | — |
| View more information | — |
| Wait 2 hours before starting engine. | |
| Sump drain bolt | 40 Nm |
| Flywheel/driveplate | -/83 Nm |
| Flywheel/driveplate | |
| Crankshaft pulley/damper centre bolt | 250 Nm |
| Camshaft sprocket/gear | 100 Nm |
| Camshaft carrier/cap | — |
| View more information | — |
| Wait 2 hours before starting engine. | |
| Camshaft/rocker cover | — |
| View more information | — |
| Inlet manifold to cylinder head | 21 Nm |
| Exhaust manifold to cylinder head | 21 Nm |
| Exhaust downpipe to manifold | 56 Nm |
| Water pump | — |
| View more information | — |
| Wait 1 hour before starting engine. | |
| Spark plugs | 18 Nm |
| Fuel rail | 21 Nm |
| Crankshaft position (CKP) sensor/engine speed (RPM) sensor | 10 Nm |
| Camshaft position (CMP) sensor | 10 Nm |
| Engine coolant temperature (ECT) sensor | 20 Nm |
| Lambda sensor (Oxygen) | 44 Nm |
| Knock sensor (KS) | 20 Nm |
| Engine oil pressure switch | 15 Nm |
| Assemble components within 3 minutes. Do not start engine for 1 hour. | |
| Oil filter | 25 Nm |
| Chassis tightening torques | |
| Front hub | 294 Nm |
| View more information | — |
| Front hub | |
| Front hub - wheel bearing housing bolts | 120 Nm |
| Rear hub | 294 Nm |
| Rear hub - wheel bearing housing bolts | 125 Nm |
| Steering wheel | 62 Nm |
| Steering rack/box mounting | 88 Nm |
| Steering track rod end | 49 Nm |
| Steering track rod end | |
| Brake caliper to carrier Front | 34 Nm |
| Brake caliper/carrier to hub Front | 192 Nm |
| Brake caliper to carrier Rear | 34 Nm |
| Brake caliper/carrier to hub Rear | 150 Nm |
| ABS sensor Front | 9 Nm |
| ABS sensor Rear | 9 Nm |
| Road wheels | 103 Nm |
Air conditioning
| No. of AC service connectors | 2 |
|---|---|
| Air conditioning restrictor type | Expansion valve |
| Compressor clutch/magnetic coupling | Yes |
| Compressor variable displacement solenoid | No |
| Air conditioning refrigerant Type | R134a |
| Air conditioning refrigerant quantity grams | 820±50 |
| Air conditioning oil group | PAG |
| Air conditioning oil Type | Dens Oil 8 |
| Air conditioning oil quantity cm³ | 135 |
| Air conditioning oil viscosity ISO | 46 |
Frequently asked questions
What is the firing order of the Toyota Highlander 3.5?
The firing order for the Toyota Highlander 3.5 (2014–2020) is 1-2-3-4-5-6.
How much oil does the Toyota Highlander 3.5 take?
The Toyota Highlander 3.5 (2014–2020) takes 6.1 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.
What are the valve clearances for the Toyota Highlander 3.5?
Valve clearances on the Toyota Highlander 3.5 (2014–2020) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the minimum brake disc thickness for the Toyota Highlander 3.5?
Brake discs on the Toyota Highlander 3.5 (2014–2020) are replaced at a minimum thickness of 25 mm (ventilated) front and 8,5 mm rear.
What battery does the Toyota Highlander 3.5 use?
The Toyota Highlander 3.5 (2014–2020) uses a 12 V, 55 Ah battery.