Replace parts related to the wireless door lock control system and smart entry and start system according to the inspection procedure.
If the wireless door lock control system and smart entry and start system do not operate, check the customize settings and make sure that the wireless door lock control system and smart entry and start system are not disabled.
The wireless door lock control system and smart entry and start system primarily use the following systems.
Power door lock control system
Wireless door lock control system
Smart entry and start system (for Entry Function)*
*: w/ Entry Function
Smart entry and start system (for Start Function)
Steering lock function
Immobiliser function
If 2 or more electrical key transmitter sub-assemblies are registered to the system, make sure to perform troubleshooting with all of them.
Confirm how the vehicle was brought to the workshop.
Vehicle was driven.
Vehicle was towed.
The cause of the malfunction may be narrowed down by confirming whether the vehicle was driven or towed.
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In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past malfunctions that seem unrelated may also help in some cases.
The following 5 items are important points for problem analysis:
| What | Vehicle model, system name |
| When | Date and time, frequency, whether the problem occurred recently or has been occurring for a long time |
| Where | Whether the problem occurs at specified location |
| Under what conditions? | Whether the doors were locked or unlocked, whether the engine switch was on (IG), whether the engine was running |
| How did it happen? | Ask the customer for details about the vehicle operating conditions, environment and malfunction. |
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Measure the battery voltage.
11 to 14 V
A simple method to determine whether the battery is depleted is to operate the horn.
If the battery voltage is below 11 V, recharge or replace the battery.
Check for blown fuses, open or shorted wire harnesses, improperly connected connectors and other problems in areas that can be visually inspected.
Check the connection of each connector and check them for deformation or damage.
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Using the GTS, enter the following menus: System Select / Health Check
If DTCs are output, perform troubleshooting for the DTCs.
Save all output DTCs and operation history.
Operation history can also be checked using the Utility menu of the GTS.
| Result | Proceed to |
|---|---|
| No DTCs are output | A |
| Wireless door lock system and smart entry and start system DTCs are output | B |
| DTCs other than wireless door lock system and smart entry and start system DTCs are output | C |
A
B
C
Based on the customer problem analysis, check the problem symptoms.
| Result | Proceed to |
|---|---|
| The problem symptom can be confirmed | A |
| The problem symptom cannot be confirmed | B |
A
B
Use the following customize setting methods to confirm that the smart entry and start system is enabled.
Using the GTS
Using the multi-display
Using manual operation
Check the customize settings.
Use the following customize setting methods to confirm that the wireless door lock system is enabled.
Using the GTS
Using the multi-display
Check the customize settings.
Even when the smart entry and start system is disabled by a customize setting, the engine can be started by an emergency key operation.
If the smart entry and start system or wireless door lock control system is disabled, all entry and start functions or wireless functions will not operate.
| Result | Proceed to |
|---|---|
| Wireless door lock control system and smart entry and start system are enabled | A |
| Smart entry and start system is disabled | B |
| Wireless door lock system is disabled | C |
A
B
C
Check the power door lock control system.
| Result | Proceed to |
|---|---|
| Power door lock control system operates properly | A |
| Power door lock control system does not operate properly | B |
A
B
Check the wireless door lock control system.
| Result | Proceed to |
|---|---|
| All functions operate properly*1 | A |
| All functions operate properly*2 | B |
| Wireless lock/unlock functions do not operate (entry and start functions also do not operate)*1 | C |
| Wireless lock/unlock functions do not operate (entry and start functions operate)*1 | D |
| Answer-back (hazard lights flash) function does not operate | E |
| Door locks or unlocks, even though wireless lock/unlock function was not operated | F |
*1: w/ Entry Function
*2: w/o Entry Function
A
B
C
D
E
F
Check the smart entry and start system (for Entry Function).
| Result | Proceed to |
|---|---|
| All functions operate properly | A |
| Entry lock/unlock functions do not operate for all doors (wireless function also does not operate) | B |
| Entry lock/unlock functions do not operate for all doors (wireless function operates)) | C |
| Entry lock/unlock functions do not operate only for driver side door | D |
| Entry lock/unlock functions do not operate only for front passenger side door | E |
| Entry lock function does not operate only for driver side door (unlock function operates) | F |
| Entry lock function does not operate only for passenger side door (unlock function operates) | G |
| Entry unlock function does not operate only for driver side door (lock function operates) | H |
| Entry unlock function does not operate only for passenger side door (lock function operates) | I |
| Luggage door open function does not operate | J |
| Luggage lock-in prevention function does not operate (Luggage door does not open) | K |
| Smart entry and start system interior warning does not sound | L |
| Touching unlock sensor for certain period of time does not unlock all doors | M |
A
B
C
D
E
F
G
H
I
J
K
L
M
Check the smart entry and start system (for Start Function).
| Result | Proceed to |
|---|---|
| All functions operate properly | A |
| Power source mode changing function does not operate correctly (power source mode cannot be changed to on (ACC), but can be changed to on (IG)) | B |
| Steering lock function does not operate | C |
| Security indicator light does not blink | D |
| Result | Proceed to |
|---|---|
| Push-button start function does not operate | E |
| Immobiliser function does not operate | F |
| Steering wheel cannot be unlocked | G |
| Power source mode changing function does not operate (power source mode cannot be changed to on (ACC) or on (IG)) | H |
| Power source mode changing function does not operate correctly (power source mode can be changed to on (ACC), but not on (IG)) | I |
| Immobiliser function does not operate (security indicator light does not turn off) | J |
A
B
C
D
E
F
G
H
I
J
Check the electrical key registration function.
| Result | Proceed to |
|---|---|
| Electrical key registration function operates properly | A |
| Cannot register new keys | B |
| Cannot register additional keys | C |
| Additional key registration display is not displayed | D |
A
B
C
D