Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Touch Pad Vibration Driver Malfunction (B155A)

DESCRIPTION

This DTC is stored if the remote touch (remote operation controller assembly) detects a malfunction in itself, such as internal hardware failure or remote touch screen vibration driver malfunction.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B155A	Touch Pad Vibration Driver Malfunction	Internal vibration driver malfunction	Remote touch (remote operation controller assembly)

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

(b) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

HINT:

If DTC B155B, B1559 is output, perform troubleshooting for DTC B155B, B1559 first.

B155B: Click here

B1559: Click here

OK

USE SIMULATION METHOD TO CHECK

NG

2.	REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY) SELF CHECK (CHECK REMOTE TOUCH SCREEN OPERATION POSITION RECOGNITION CONDITION)

(a) Enter self-diagnostic mode.

Click here

(b) Operate the remote touch screen laterally and check that the remote touch screen generates vibration feedback.

NOTICE:

Since the remote touch screen may recognize a pinch in/out or flick operation if operated with 2 fingers, always use 1 finger to operate the remote touch screen in self-diagnostic mode.

HINT:

When operating at an excessively low temperature, vibration feedback may be difficult to feel.

Result	Proceed to
Vibration feedback is generated according to remote touch screen operation	A
The switch illumination changes but vibration feedback is not generated according to remote touch screen operation	B

B

REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY)

A

3.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Navigation System > Clear DTCs

NEXT

4.	CHECK FEEDBACK VIBRATION

(a) Turn the engine switch on (ACC), swipe the MENU screen to move the cursor and pull it over the button with the vibration feedback.

HINT:

Using the multi-display assembly customize setting screen, check that the remote touch screen vibration feedback reaction force setting is not set to "Off".

NEXT

5.

CHECK DTC

(a) Recheck for DTCs and check if the same DTC is output again.

Body Electrical > Navigation System > Trouble Codes

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE REMOTE TOUCH (REMOTE OPERATION CONTROLLER ASSEMBLY)