Keyless Access Lock/Unlock Cannot Be Performed From Any Of The Doors

WARNING: This page is about a different car, the 2014 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

Check that there are no other registered access keys inside the vehicle.
Inspect LAN system according to the basic diagnostic procedure, and make sure that there is no fault.
Check that the keyless access function is not stopped.
When the access key or keyless access control module is replaced, registration of the immobilizer is required. For the relevant procedures, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER".

Step	Check	Yes	No
1 CHECK OPERATION OF KEYLESS DOOR LOCK. Using the keyless function of the access key, check the operation of the door lock.	Does it lock/unlock normally?	Check the exterior antenna, oscillator, touch sensor, lock/unlock buttons.	Go to step 2 .
2 CHECK ACCESS KEY. Check for whether lock and unlock is possible with the registered access key.	Is there any access key which can lock/unlock when the touch sensor is operated?	Check the access key that does not operate. Go to step 3 .	Go to step 4 .
3 CHECK ACCESS KEY. Measure the battery voltage of the access key that does not operate.	Is the voltage 2.5 - 3.2 V?	Replace the access key.	Replace the battery.
4 CHECK DOOR LOCK. Operate the driver's center door lock switch.	Does the door lock operate?	Go to step 5 .	Check the door lock control system. < Ref. to INSPECTION , Door Lock Control System. >
5 CHECK HARNESS. Disconnect the receiver connector (R296). Using a tester, measure the resistance between receiver and chassis ground. Connector & terminal (R296) No. 1 - Chassis ground:	Is the resistance less than 10 Ω?	Go to step 6 .	Repair or replace the open circuit of harness.
6 CHECK HARNESS. Disconnect the keyless access CM connector. Using a tester, measure the resistance between receiver and keyless access CM. Connector & terminal (R296) No. 4 - (B573) No. 5: (R296) No. 5 - (B573) No. 17: (R296) No. 2 - (B573) No. 19:	Is the resistance less than 10 Ω?	Go to step 7 .	Repair or replace the open circuit of harness.
7 CHECK RECEIVER. Replace with a receiver that is operating normally. < Ref. to REMOVAL , Receiver. >	When the front unlock sensor and the rear gate opener button are operated, does it lock/unlock?	Malfunction occurred in receiver.	Go to step 8 .
8 CHECK HARNESS. Using a tester, measure the voltage between the keyless access CM connector and chassis ground. Connector & terminal (B572) No. 2 (+) - Chassis ground (-):	Is the voltage 10 V or more when the ignition switch is turned to ON?	Go to step 9 .	Check the keyless access CM power supply circuit.
9 CHECK HARNESS. Using a tester, measure the resistance between the keyless access CM connector and chassis ground. Connector & terminal (B572) No. 11 - Chassis ground:	Is the resistance less than 10 Ω?	Replace the keyless access CM. < Ref. to REMOVAL , Keyless Access CM. >	Repair or replace the open circuit of harness.