Lexus NX: Precaution
PRECAUTION
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
NOTICE:
After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.
Waiting Time before Disconnecting Cable from Negative (-) Auxiliary Battery Terminal| System Name | See Procedure |
|---|---|
| Vehicle enrolled in Lexus Enform system or safety connect system | 6 minutes |
| Vehicle not enrolled in Lexus Enform system and safety connect system | 1 minute |
NOTICE:
-
When replacing the radio receiver assembly or navigation ECU, always replace it with a new one.
If a radio receiver assembly or navigation ECU which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio receiver assembly or navigation ECU may not operate normally.
-
When performing the following work, the navigation system may restart when turning the power switch on (ACC) (due to radio receiver assembly and navigation ECU certification).
- Repair or replace the negative (-) auxiliary battery terminal due to it being disconnected or depleted.
- The radio receiver assembly or navigation ECU replacement or removal and installation.
- When replacing the DCM (telematics transceiver), make sure to replace it with a new one (w/ Manual [SOS] Switch).
- After replacing the radio receiver assembly, if the "New software is not compatible with the system. Contact your dealer." on-screen message is displayed on the multi-display assembly, update the software of the navigation ECU.
- After replacing the navigation ECU, if the "New software is not compatible with the system. Contact your dealer." on-screen message is displayed on the multi-display assembly, update the software of the radio receiver assembly.
PRECAUTION FOR NAVIGATION SYSTEM
(a) If replacing any of parts, do the settings shown in the table below.
w/ Manual (SOS) Switch| Replacement Part | Necessary Procedure | Link |
|---|---|---|
|
*1: w/ SXM System
*2: for Lexus Enform Remote Compatible Type | ||
| Radio receiver assembly | After replacing the radio receiver assembly of vehicles subscribed to pay-type satellite radio broadcasts, radio ID registration is necessary*1 | - |
| Re-install the eOwner's manual | - | |
| DCM (telematics transceiver) | Vehicle contract setting | |
| Code registration*2 | | |
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| Replacement Part | Necessary Procedure | Link |
|---|---|---|
| Radio receiver assembly | Re-install the eOwner's manual | - |
READ NEXT:
Parts Location
PARTS LOCATION ILLUSTRATION *A w/ Parking Assist Monitor System *B w/ Panoramic View Monitor System *1 NO. 2 ENGINE ROOM RELAY BLOCK - DCM FUSE (w/ Manual [SOS] Switch) - ECU-B NO.1 FU
System Diagram
SYSTEM DIAGRAM
System Description
SYSTEM DESCRIPTION NAVIGATION SYSTEM OUTLINE (a) Vehicle position tracking methods It is essential that the navigation system correctly tracks the current vehicle position and displays it on the map.
SEE MORE:
GSW Terminal Circuit Malfunction (B1243)
DESCRIPTION If the collision door lock release function does not operate normally, or an open or short in the GSW input circuit of the main body ECU (multiplex network body ECU) is detected, DTC B1243 will be stored. DTC No. Detection Item DTC Detection Condition Trouble Area B1243 GS
Switch Lights of Remote Touch Always Illuminate or cannot be Controlled Using Rheostat
DESCRIPTION Power is supplied to the remote touch illumination when the light control switch is in the tail or head position. HINT:
When the remote touch is in self check mode, the switch illumination on the remote touch may remain on.
If any illumination controlled by the rheostat switch has a
