Lexus IS250 IS220d GSE20 ALE20 - PARK ASSIST / MONITORING
PARKING ASSIST MONITOR SYSTEM - DTC CHECK / CLEAR
- HINT:
START DIAGNOSTIC MODE |
There are 2 methods to start diagnostic mode. Start the mode by using one of them.

Method 1
Start the engine.
While pressing and holding the "INFO" switch, operate the light control switch: OFF → Turn ON → Turn OFF → Turn ON → Turn OFF → Turn ON → Turn OFF.
The diagnostic mode starts and the "System Check Mode" screen will be displayed. Service inspection starts automatically and the result will be displayed.

Method 2
Start the engine.
Switch to the "Display Check" screen.
From the display quality adjustment screen, touch the corners of the screen in the following order: upper left → lower left → upper left → lower left → upper left → lower left.
The diagnostic mode starts and the "System Check Mode" screen will be displayed. Service inspection starts automatically and the result will be displayed.
FINISH DIAGNOSTIC MODE |
There are 2 methods to end diagnostic mode. Use one of them.
Turn the engine switch off.
Press and hold the "DISP" switch for 3 seconds.
DIAGNOSIS MENU |

The "Diagnosis MENU" screen will be displayed by pressing the menu switch on the "System Check Mode" screen.
CHECK DTC |

Read the system check result.
If the check result is "EXCH", "CHEK" or "Old", touch the displayed check result to view the results on the "Unit Check Mode" screen and record them.
- HINT:
- HINT:
- When proceeding to view the results of another device, press the service switch to return to the "System Check Mode" screen. Repeat this step.

Read the communication diagnostic check result.
Return to the "System Check Mode" screen, and press the "LAN Mon" switch to enter the "LAN Monitor" screen.

If the check result is "CHEK" or "Old", touch the displayed check result to view the results on the individual communication diagnostic screen and record them.
- HINT:
DTC CLEAR/RECHECK |

Clear DTC
Press the "Code CLR" switch for 3 seconds.
The check results are cleared.

Recheck
Press the "Recheck" switch.

Confirm that all diagnostic codes are "OK" when the check results are displayed. If a code other than "OK" is displayed, troubleshoot again.

Press the "LAN Mon" switch to change to the "LAN Monitor" screen.

Confirm that all diagnostic codes are "No Err". If a code other than "No Err" is displayed, troubleshoot again.