PROCEDURE
1. | CHECK PROBLEM SYMPTOM (WARNING NOTIFICATION FUNCTION) |
(a) Check the problem symptom.
(1) Check the problem symptom of the warning notification function.
Result | Proceed to |
---|---|
The multi-display screen does not show a warning message even though a warning light turns on or the multi-information display indicates a warning. | A |
The multi-display screen shows a warning message even though a warning light is not on and the multi-information display does not indicate a warning. | B |
The multi-display screen shows a warning message different from the warning light or the multi-information display. |
HINT:
B | ![]() | GO TO STEP 7 |
|
2. | INSPECT WARNING LIGHT |
(a) Check if the indicated warning light or message is listed in the following table.
HINT:
Only messages listed in the table are included in the warning notification function.
Warning Name |
---|
Engine warning |
Brake system warning |
VSC warning |
ABS warning |
ECB warning |
EPS warning |
Charging system warning |
Airbag warning |
PCS warning |
Cruise warning |
LEXUS parking assist-sensor system open circuit warning |
Drive start control warning |
Brake override system warning |
Entry and start system warning |
Automatic headlight beam level control system warning |
Automatic high beam warning |
LED headlight warning |
4WD warning |
Tire pressure system warning |
Electric parking brake warning |
Auto hold warning |
BSM system warning |
Reverse control wiper warning |
Advanced sonar system warning |
Secondary collision brake system warning |
Engine maintenance warning |
LTA warning |
RSA warning |
RCTA warning |
Engine oil level warning |
Brake fluid warning |
Engine oil pressure warning |
Tire pressure system warning |
Washer fluid level warning |
Engine oil maintenance warning |
High coolant temperature warning |
Result | Proceed to |
---|---|
Warning light or message is listed in the table. | A |
Warning light or message is not listed in the table. | B |
B | ![]() | END |
|
3. | CHECK CAN COMMUNICATION SYSTEM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Bus Check.
(e) Check that all ECUs and sensors that use CAN communication are connected.
Click here
Result | Proceed to |
---|---|
There are no connection problems. | A |
There is a connection problem. | B |
B | ![]() | GO TO CAN COMMUNICATION SYSTEM |
|
4. | CHECK METER WARNING LIGHT |
(a) Check that the warning light of the combination meter assembly illuminates and a message displays on the multi-information display when there is a malfunction, and do not when there is not a malfunction.
OK:
There are no problems with warning lights or warning messages.
HINT:
The warning notification function of the telematics system uses the warning notification signals sent and received by the meter/gauge system. Therefore, if the meter/gauge system is not operating normally, the warning notification function will not operate normally.
Result | Proceed to |
---|---|
OK (w/ Navigation System) | A |
OK (w/o Navigation System) | B |
NG | C |
B | ![]() | GO TO STEP 6 |
C | ![]() | GO TO METER / GAUGE SYSTEM |
|
5. | CHECK NAVIGATION SYSTEM |
(a) Check if the navigation system is operating and functioning normally.
OK:
The navigation system is normal.
OK | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
NG | ![]() | GO TO NAVIGATION SYSTEM |
6. | CHECK AUDIO AND VISUAL SYSTEM |
(a) Check if the audio and visual system is operating and functioning normally.
OK:
The audio and visual system is normal.
OK | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
NG | ![]() | GO TO AUDIO AND VISUAL SYSTEM |
7. | CHECK METER WARNING LIGHT |
(a) Check that the warning light of the combination meter assembly illuminates and a message displays on the multi-information display when there is a malfunction, and do not when there is not a malfunction.
OK:
There are no problems with warning lights or warning messages.
HINT:
The warning notification function of the telematics system uses the warning notification signals sent and received by the meter/gauge system. Therefore, if the meter/gauge system is not operating normally, the warning notification function will not operate normally.
OK | ![]() | REPLACE RADIO RECEIVER ASSEMBLY |
NG | ![]() | GO TO METER / GAUGE SYSTEM |
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Transmission Control Cable: Components
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Pre-collision System: Internal Control Module Software Incompatibility Invalid / Incompatible Software Component (U030057)
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