Lexus ES: System Description
SYSTEM DESCRIPTION
Vehicle Proximity Notification System
(a) When the vehicle is being driven quietly using the motor only, the vehicle proximity notification system outputs a warning sound from the vehicle approaching speaker assembly to inform pedestrians, cyclists etc., of the approach of the vehicle.
(b) The warning sound is output by the vehicle approaching speaker assembly at a volume level that will not be perceived as noise. Also the pitch of the sound changes in accordance with vehicle speed so that the sound reflects vehicle deceleration and acceleration.
(c) Vehicle proximity notification system operation automatically stops when the vehicle is stopped, the engine starts or the vehicle is driven at 25 km/h (16 mph) or more.
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CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the vehicle proximity notification system.
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
OPERATION CHECK VEHICLE PROXIMITY NOTIFICATION SYSTEM OPERATION CHECK (a) System operation check (vehicle stopped) (1) Apply the parking brake. (2) Turn the power switch on (IG). (3) With the brake pe
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
SEE MORE:
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Main Body ECU (Multiplex Network Body ECU) Sliding Roof ECU (Sliding Roof Drive Gear Assembly)
Sliding roof operation permission signal
IG signal
Front door courtesy light switch assembly signal
Vehicle speed
PARTS LOCATION ILLUSTRATION *1 OUTER MIRROR SWITCH ASSEMBLY *2 OUTER REAR VIEW MIRROR ASSEMBLY LH *3 OUTER REAR VIEW MIRROR ASSEMBLY RH *4 DEF RELAY *5 OUTER MIRROR LH *6 OUTER MIRROR RH *7 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - DEF FUSE
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