"Key Battery Low Replace Key Battery" is Displayed on the Multi-information Display [06/2018 - ]: Procedure

1. Check the electrical key transmitter sub-assembly being used by the customer.

   Result

   Result	Proceed to
   Electrical key transmitter sub-assembly	A
   Electrical key (card key) transmitter sub-assembly	B

Result: 

B 

See step  3

Result: 

A 

See step  2

1. Check the transmitter battery level of the electrical key transmitter sub-assembly that was checked first.
   1. Press and hold the lock switch of the electrical key transmitter sub-assembly for 5 seconds and check the number of times that the LED illuminates.

      HINT: 

      • The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is being used. "Yes" is displayed for the Data List item "Key Low Battery" when this voltage information indicates 2.2 V or less.

        Refer to DATA LIST / ACTIVE TEST [06/2018 - 09/2022] , or refer to DATA LIST / ACTIVE TEST [09/2022 - ]

      • Even if the transmitter battery is depleted, it is still possible to start the engine by holding the electrical key transmitter sub-assembly near the engine switch, depressing the brake pedal and pressing the engine switch.

   Result

   Result	Proceed to
   LED illuminates 3 times or more when switch is pressed and held	A
   LED does not illuminate when switch is pressed and held	B
   LED illuminates once or twice but not a third time	C

Result: 

B 

REPLACE TRANSMITTER BATTERY. Refer to  REPLACEMENT [06/2018 - ] 

Result: 

C 

REPLACE TRANSMITTER BATTERY. Refer to  REPLACEMENT [06/2018 - ] 

Result: 

A 

See step  3

1. Get into the vehicle while carrying an electrical key transmitter sub-assembly.
2. Move the shift lever to P.
3. Press the push start switch 2 times without depressing the brake pedal and check that the power source mode changes.

   HINT: 

   • Check that there are no other electrical key transmitter sub-assemblies inside the vehicle.
   • Only take the electrical key transmitter sub-assembly being inspected inside the vehicle and then close all of the doors.
   • After 30 seconds elapse after turning the engine switch off, press the engine switch 2 times and turn the engine switch on (IG).

   Result

   Result	Proceed to
   The engine switch can be turned on (IG).	A
   The engine switch cannot be turned on (IG).	B

Result: 

B 

REPLACE TRANSMITTER BATTERY. Refer to  REPLACEMENT [06/2018 - ] 

Result: 

A 

See step  4

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Smart Access / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Smart Access > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Key Low Battery	Transmitter battery depleted	No or Yes	No: Transmitter battery not depleted Yes: Transmitter battery depleted	The electrical key transmitter sub-assembly sends voltage information to the certification ECU (smart key ECU assembly) when it is transmitting. "Yes" is displayed for the Data List item "Key Low Battery" when this voltage information indicates 2.2 V or less. HINT:  This Data List item should be checked when the electrical key transmitter sub-assembly is at room temperature (example: at -20°C (-4°F), "Yes" may be displayed even if the transmitter battery is new). "Yes" can be displayed only when the Data List item "No Responce" is "No".

   Body Electrical > Smart Access > Data List 

   Tester Display
   Key Low Battery

   OK

   The Techstream display changes correctly in response to the engine switch operation.

   Result

   Result	Proceed to
   "No" is displayed on the Techstream display	A
   "Yes" is displayed on the Techstream display	B

Result: 

A 

CHECK ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY 

Perform the check for any other registered electrical key transmitter sub-assemblies starting from procedure 1.

Result: 

B 

REPLACE TRANSMITTER BATTERY. Refer to  REPLACEMENT [06/2018 - ]