Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
- If a problem occurs in certain locations or at certain times of day, check for the possibility of wave interference.
- When the electrical key transmitter sub-assembly is brought near a door control receiver (RF band), door outside handle assembly (LF band), indoor electrical key antenna (LF band) or any of the electrical key antennas (LF band), the possibility of wave interference decreases. By doing this, whether wave interference is causing the problem can be checked.
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | Link |
|---|---|---|
| Entry interior alarm does not sound | Proceed to "Entry Interior Alarm does not Sound" | |
| Entry exterior alarm and answer-back buzzer do not sound | Proceed to "Entry Exterior Alarm and Answer-back Buzzer do not Sound" | |
| All door entry lock/unlock functions and wireless functions do not operate | Proceed to "All Door Entry Lock/Unlock Functions and Wireless Functions do not Operate" | |
| All door entry lock/unlock functions do not operate, but wireless functions operate | Proceed to "All Door Entry Lock/Unlock Functions do not Operate, but Wireless Functions Operate" | |
| Driver side door entry unlock function does not operate | Proceed to "Driver Side Door Entry Unlock Function does not Operate" | |
| Front passenger side door entry unlock function does not operate | Proceed to "Front Passenger Side Door Entry Unlock Function does not Operate" | |
| Rear door LH entry unlock function does not operate | Proceed to "Rear Door LH Entry Unlock Function does not Operate" | |
| Rear door RH entry unlock function does not operate | Proceed to "Rear Door RH Entry Unlock Function does not Operate" | |
| Driver side door entry lock and unlock functions do not operate | Proceed to "Driver Side Door Entry Lock and Unlock Functions do not Operate" | |
| Front passenger side door entry lock and unlock functions do not operate | Proceed to "Front Passenger Side Door Entry Lock and Unlock Functions do not Operate" | |
| Rear door LH entry lock and unlock functions do not operate | Proceed to "Rear Door LH Entry Lock and Unlock Functions do not Operate" | |
| Rear door RH entry lock and unlock functions do not operate | Proceed to "Rear Door RH Entry Lock and Unlock Functions do not Operate" | |
| Driver side door entry lock function does not operate | Proceed to "Driver Side Door Entry Lock Function does not Operate" | |
| Front passenger side door entry lock function does not operate | Proceed to "Front Passenger Side Door Entry Lock Function does not Operate" | |
| Rear door LH entry lock function does not operate | Proceed to "Rear Door LH Entry Lock Function does not Operate" | |
| Rear door RH entry lock function does not operate | Proceed to "Rear Door RH Entry Lock Function does not Operate" | |
| Back door entry unlock function does not operate | Proceed to "Back Door Entry Unlock Function does not Operate" | |
| Back door entry lock and unlock functions do not operate | Proceed to "Back Door Entry Lock and Unlock Functions do not Operate" | |
| Back door entry lock function does not operate | Proceed to "Back Door Entry Lock Function does not Operate" | |
| New key cannot be registered | Proceed to "New Key cannot be Registered" | |
| Additional key cannot be registered | Proceed to "Additional Key cannot be Registered" | |
| Entry unlock and unlatch functions do not operate using kick sensor | Proceed to "Entry Unlock and Unlatch Functions do not Operate Using Kick Sensor" | |
| Entry lock function does not operate using close & lock function | Proceed to "Entry Lock Function does not Operate Using Close & Lock Function" | |
| New key registration warning message is not displayed | Proceed to "New Key Registration Warning Message is not Displayed" | |
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Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function) HINT: The following items can be customized. NOTICE:
When the customer requests a change in a function ...
Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) Smart access system with push-button start (for Entry Function) data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Theft Deterrent System: Security Horn Circuit
DESCRIPTION When the theft deterrent system is switched from the armed state to the alarm sounding state, the main body ECU (multiplex network body ECU) transmits a signal to cause the security horn assembly to sound at intervals of 0.4 seconds. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Millimeter Wave Radar Sensor: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are replaced during millimeter wave radar sensor assembly removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/Rep ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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