LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2019 >> WRX Base >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Anti-Theft System - Security And Locks >> Keyless Entry System >> Inspection >> Symptom Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Symptom Chart

Symptoms Repair order Reference
None of the functions of the keyless entry system operate. 1. Check the keyless transmitter battery. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS TRANSMITTER BATTERY AND FUNCTION .
2. Remove and visually inspect the following fuses.
  • No. 3 (in fuse & relay box)
  • No. 7 (in fuse & relay box)
  • No. 8 (in main fuse box)
If the fuse is blown out, replace the fuse with a new part.
When there is no defective with the fuse, check the power supply and ground circuit. Refer to SECURITY AND LOCKS>DOOR LOCK CONTROL SYSTEM>INSPECTION>CHECK POWER SUPPLY AND GROUND CIRCUIT .
3. Check the keyless entry control module. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS ENTRY CONTROL MODULE .
4. Check the power supply and ground circuit for body integrated unit. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK BODY INTEGRATED UNIT POWER SUPPLY AND GROUND CIRCUIT .
5. Check the key warning switch. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEY WARNING SWITCH .
6. Check the body integrated unit. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
The keyless transmitter cannot be registered. 1. Check the keyless transmitter battery. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS TRANSMITTER BATTERY AND FUNCTION .
2. Check the key warning switch. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEY WARNING SWITCH .
3. Check the keyless entry control module. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS ENTRY CONTROL MODULE .
4. Check the body integrated unit. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
Door lock or unlock does not operate.
NOTE: If the door lock control system does not operate when using the door lock switch, check the door lock control system. Refer to SECURITY AND LOCKS>DOOR LOCK CONTROL SYSTEM>INSPECTION .
1. Check the keyless transmitter battery. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS TRANSMITTER BATTERY AND FUNCTION .
2. Check the key warning switch. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEY WARNING SWITCH .
3. Check the door switch signal. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK DOOR SWITCH .
4. Check the keyless entry control module. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS ENTRY CONTROL MODULE .
5. Check the body integrated unit. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
The keyless buzzer and hazard light do not operate. 1. Check the keyless buzzer operation. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK KEYLESS BUZZER .
2. Check the hazard light operation. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK HAZARD LIGHT OPERATION .
3. Check the body integrated unit. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
Room light does not operate. 1. Check the room light operation. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK ROOM LIGHT OPERATION .
2. Check the body integrated unit. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .
Ignition switch illumination does not operate. 1. Check the ignition switch illumination. Refer to SECURITY AND LOCKS>KEYLESS ENTRY SYSTEM>INSPECTION>CHECK IGNITION SWITCH ILLUMINATION .
2. Check the body integrated unit. Refer to BODY CONTROL SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE .