DTC L0432: RLS RS Adaptation Error

TROUBLE JUDGMENT

When the lighting control sensor is installed with the wrong procedure, DTC L0432 is stored by LIN.

TECHNICAL DESCRIPTION (COMMENT)

The lighting control sensor may have been installed with the wrong procedure.

Incorrect installation procedure: Connect the connector before mounting the lighting control sensor onto the optical coupler of the windshield.
Correct installation procedure: Mount the lighting control sensor onto the optical coupler of the windshield. Wipe the windshield surface thoroughly, and check that the surface is dry. Then, connect the connector.

TROUBLESHOOTING HINTS

Lighting control sensor improperly installed
Lighting control sensor (rain sensor) abnormal operation

DIAGNOSIS

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

MB991824: Vehicle Communication Interface (V.C.I.)
MB991827: M.U.T.-III USB Cable
MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)

STEP 1. Using scan tool MB991958, Check whether the diagnostic trouble code is reset.

Disconnect the connector from the lighting control sensor, and connect the connector to the lighting control sensor again. Then, check again if the DTC is set to LIN.

(1)

caution

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958. Refer to "How to connect scan tool

."
(2)Disconnect the connector of lighting control sensor, and connect it again.

note

When connecting the connector, follow the correct installation procedure.

(3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(4)Check if DTC is set.

Q. Is the DTC set?

Go to Step 2.

The lighting control sensor is installed with the wrong procedure.

STEP 2. Lighting control sensor installation surface check

Visually check the presence of scratches or air bubbles <diameter of 5 mm (0.2 inch) or more> on the windshield to which the lighting control sensor is installed. In addition, visually check that the optical coupler is not broken and that the lighting control sensor can be installed.

Q. Is the check result normal?

	Go to Step 3.

	Replace the windshield (Refer to GROUP 42A - Windshield )

STEP 3. Using scan tool MB991958, Check whether the diagnostic trouble code is reset.

Check again if the DTC is set to LIN.

(1)Wipe the windshield surface of the lighting control sensor section thoroughly, and check that the surface is dry. Then, perform the lighting control sensor (rain sensor) adaptation. <Refer to GROUP 51 - Lighting Control Sensor (Rain Sensor) Adaptation

(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.

(3)Check if DTC is set.

Q. Is the DTC set?

	Replace the lighting control sensor.

	The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).