LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1990 >> LS 400 >> Repair and Diagnosis >> Quick Lookups >> Electrical Component Locations >> Electrical Component Locator >> Control Units
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Control Units

CONTROL UNITS LOCATION

Component Location
Electronic Control Unit (ECU)
A/C System Behind center of dash. See Figure.
Anti-Lock Brakes (ABS) Behind right side of dash. See Figure & Figure .
Anti-Theft Behind left side of dash. See Figure.
Coolant Level Warning Behind left side of dash, left of steering column. See Figure.
Cruise Control Behind left side of dash. See Figure & Figure .
Elec. Modulated Air Suspension In right rear corner of luggage compartment. See Figure.
Elec. Side Mirrors Behind right side of dash. See Figure.
Engine Behind right side of dash. See Figure, Figure & Figure .
Power Seat Under driver's seat. See Figure.
Progressive Power Steering Behind center of dash. See Figure.
SRS System Behind center console. See Figure & Figure .
Shift Lock (A/T) On center console, behind shift lever. See Figure.
TRAC System Behind right side of dash, integral of ABS ECU. See Figure & Figure .
Tilt & Telescopic Steering Column Behind left side of dash, above steering column. See Figure.
Transmission Behind right side of dash, integrated with engine ECU. See Figure, Figure & Figure .
Wireless Door Lock On left side of luggage compartment.