Toyota2017–2023Technical specifications

Prius 1.8 PHEV: Technical specifications

Workshop data for the 1.8-litre petrol (engine code 2ZR-FXE). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (2ZR-FXE) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: Prius
Years: 2017–2023
Fuel: Petrol
Engine code: 2ZR-FXE

Performance & efficiency

Power: 72 kW (98 hp)
Engine size: 1,798 cc
Cylinders: 4 · DOHC
Compression ratio: 13:1
Fuel system: Toyota

Fluids & capacities

Engine oil (with the filter): 4.2 litres

All 106 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1798
Compression ratio :1	13
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Toyota
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Toyota
Fuel system Description	MFI-s
Air metering Type	Mass
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Firing order

The firing order for the Toyota Prius 1.8 PHEV (2017–2023) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances on the Toyota Prius 1.8 PHEV (2017–2023) 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 Prius 1.8 PHEV (2017–2023) takes 4.2 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Coolant

See the reference table for the complete coolant entries and their conditions.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Preferred engine oil
Ambient temperature range	All temperatures
Engine oil grade SAE	0W-20
Engine oil classification ILSAC	GF-5
Engine oil classification API/ACEA	SN
Engine oil options
Ambient temperature range	All temperatures
Engine oil grade SAE	5W-30
Engine oil classification ILSAC	GF-4
Engine oil classification API/ACEA	SL
Ambient temperature range	-18°C➞
Engine oil grade SAE	10W-30
Engine oil classification ILSAC	GF-4
Engine oil classification API/ACEA	SL
Ambient temperature range	-12°C➞
Engine oil grade SAE	15W-40
Engine oil classification ILSAC	GF-4
Engine oil classification API/ACEA	SL
Engine with filter(s) litres	4.2
Other lubricants and capacities
Automatic transmission fluid Type	Toyota ATF WS
Automatic transmission (drain & refill) litres	3.6
Do not drive vehicle in inspection mode as damage to the vehicle may occur.
Coolant Type	Super long life
Coolant Colour	Pink
Cooling system - total capacity litres	5.4
Cooling system
Brake fluid Type	DOT 3/4

Brakes & wear limits

Brake disc thickness

Brake discs on the Toyota Prius 1.8 PHEV (2017–2023) are replaced at a minimum thickness of 19 mm (ventilated) front and 7,5 mm rear.

Minimum disc thickness for replacement - ventilated Front	19 mm
Minimum disc thickness for replacement Rear	7,5 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

Tuning and emissions

Ignition timing
Tuning conditions	—
View more information	—
Ignition timing - basic BTDC °Engine/rpm	10±2/1000 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	1000±50 Not adjustable

Service checks and adjustments

Oil pressure
Compression pressure bar	6,3-8,3
Oil pressure bar/rpm	—
Radiator cap bar	0,80-1,10
Radiator cap
Thermostat opens °C	80-84

Fuel system

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	5,0-10,0
Throttle motor Ohm	0,1-1,4

Spark plugs

Spark plugs Original equipment	Denso
Spark plug Type	FK20HBR8
Electrode gap mm	0,7-0,8

Tightening torques

Cylinder head
Cylinder head instructions	—
View more information	—
View more information	—
Cylinder head bolts
Tighten	24 Nm
Tighten	49 Nm
Tighten	90°
Tighten	45°
Other engine tightening torques
Main bearings Renew bolts/nuts	—
View more information	—
Main bearings
Main bearings Stage 1	40 Nm
Main bearings Stage 2	90°
Big end bearings Renew bolts/nuts	—
View more information	—
Big end bearings
Big end bearings Stage 1	20 Nm
Big end bearings Stage 2	90°
Oil pump to cylinder block	21 Nm
Sump bolts	—
View more information	—
Wait 2 hours before starting engine or filling engine with oil to allow sealant to dry.
Sump drain bolt	37 Nm
Flywheel/driveplate	-/49 Nm+90°
Flywheel/driveplate
Crankshaft pulley/damper centre bolt	190 Nm
Camshaft sprocket/gear	54 Nm
Camshaft carrier/cap	—
View more information	—
Camshaft carrier/cap
Camshaft/rocker cover	—
View more information	—
Assemble components within 3 minutes and tighten bolts within 15 minutes. Wait 2 hours before starting engine or filling engine with oil to allow sealant to dry.
Inlet manifold to cylinder head	28 Nm
Exhaust manifold to cylinder head	26 Nm
Exhaust downpipe to manifold	43 Nm
Water pump	—
Water pump
Spark plugs	20 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)	21 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	216 Nm
Front hub - wheel bearing housing bolts	130 Nm
Rear hub - wheel bearing housing bolts	90 Nm
Steering wheel	50 Nm
Steering rack/box mounting	133 Nm
Steering track rod end	49 Nm
Steering track rod end
Brake caliper to carrier Front	34 Nm
Brake caliper/carrier to hub Front	107 Nm
Brake caliper to carrier Rear	34 Nm
Brake caliper/carrier to hub Rear	107 Nm
ABS sensor Front	9 Nm
Road wheels	103 Nm

Air conditioning

Do not mix R134a with R1234yf.
No. of AC service connectors	2
Air conditioning restrictor type	Expansion valve
Compressor clutch/magnetic coupling	No
Compressor variable displacement solenoid	Yes
Air conditioning refrigerant Type	—
Air conditioning refrigerant quantity grams	470±30
Air conditioning oil group	POE
Air conditioning oil Type	Dens Oil 11
High voltage electric motor within compressor; correct oil must be used to reduce risk of electric shock.
Air conditioning oil quantity cm³	117±7
Air conditioning oil viscosity ISO	46

Frequently asked questions

What is the firing order of the Toyota Prius 1.8 PHEV?

The firing order for the Toyota Prius 1.8 PHEV (2017–2023) is 1-3-4-2.

How much oil does the Toyota Prius 1.8 PHEV take?

The Toyota Prius 1.8 PHEV (2017–2023) takes 4.2 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 Prius 1.8 PHEV?

Valve clearances on the Toyota Prius 1.8 PHEV (2017–2023) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the minimum brake disc thickness for the Toyota Prius 1.8 PHEV?

Brake discs on the Toyota Prius 1.8 PHEV (2017–2023) are replaced at a minimum thickness of 19 mm (ventilated) front and 7,5 mm rear.