Lexus IS250 IS220d GSE20 ALE20 4GR-FSE STARTING

ENTRY AND START SYSTEM - ON-VEHICLE INSPECTION

1. CHECK POWER SOURCE MODE CHANGE FUNCTION

Check the function of the engine switch.

A/T Models: Check that power source mode changes in accordance with the conditions of the shift position and brake pedal.

Brake PedalShift LeverPower Source Mode Pattern
DepressedP or N Position When the engine switch is pushed once.
off → engine start
on (ACC) → engine start
on (IG) → engine start
Not depressedP position Each time the engine switch is pushed.
off → on (ACC) → on (IG) → off
Except P Position Each time the engine switch is pushed.
off → on (ACC) → on (IG) → on (ACC)
-P Position When the engine switch is pushed in the on (IG) condition (engine running).
on (IG) → off
-Except P Position When the engine switch is pushed in the on (IG) condition (engine running).
on (IG) → on (ACC)

M/T Models: Start function has different power source mode patterns to suit the clutch pedal condition.

Clutch PedalPower Source Mode Pattern
DepressedWhen the engine switch is pushed once.
off → engine start
on (ACC) → engine start
on (IG) → engine start
Not depressedEach time the engine switch is pushed.
off → on (ACC) → on (IG) → off
-When the engine switch is pushed in the on (IG) condition (engine running).
on (IG) → off

Check if power source mode changes without pressing the engine switch.

A/T Models: With power source mode on (ACC) and the shift position in P, wait for at least 1 hour. Check that power source mode changes from on (ACC) to off automatically.

M/T Models: With power source mode on (ACC), wait for at least 1 hour. Check that power source mode changes from on (ACC) to off automatically.

2. CHECK INDICATOR CONDITION
Entry And Start System - On-Vehicle Inspection. 4GR-FSE STARTING. Lexus IS250 IS220d GSE20 ALE20

Check the indicator on the engine switch.

Check that the engine switch indicator turns on and changes color according to the table below.

Power Source Mode/ConditionIndicator Light Condition
Brake pedal released (A/T)
Clutch pedal released (M/T)
Brake pedal depressed, shift lever in P or N (A/T) Clutch pedal depressed (M/T)
offOFFTurns ON (Green)
(Key ID matches vehicle)
Turns ON (Green)
(Key ID matches vehicle)
on (ACC, IG)Turns ON (Amber)Turns ON (Green)Turns ON (Green)
Engine runningOFFOFFOFF
Steering lock not unlockedFlashes (Green) for 30 sec.Flashes (Green) for 30 sec.Flashes (Green) for 30 sec.
System malfunctionFlashes (Amber) for 15 sec.Flashes (Amber) for 15 sec.Flashes (Amber) for 15 sec.
Clutch start switch malfunction (M/T)Flashes (Green) for 15 sec.Flashes (Green) for 15 sec.Flashes (Green) for 15 sec.