Car starts fine most times. Other times, light does not come on when door is opened and ignition switch does not work.
That may or may not be easy to find. It sounds like a loose electrical connection somewhere, but power to the ign. switch comes from the battery to the power distribution box to a large maxi-fuse or two, and then straight to the switch.
No courtesy light either? Try the headlights when it won't respond. If no headlights, almost certainly it is between the battery and the distribution box. Very helpful if you have a test light or voltmeter to check for power at the maxi-fuses when the key won't respond. If power there at those fuses, then check for power at the fuse panel under the dash. Some will be hot at all times (like the brake lights fuse, and the courtesy lights fuse). You are checking if power is coming from the distr. box into the cabin to the fuse panel (and to the ignition switch, also,) through the junction block connector from the engine bay into the cabin.
To check for power with a test light at a fuse, here is how: all fuses have 2 testing ports or slots at the top ends of the fuse. you ground a test light lead to a good ground (battery negative post), and then use the tester probe to touch inside the slot on the top of the fuse. You don't need to take the fuse out to test for power. If testing a maxi-fuse for power, you don't even need the key turned to on-those fuses are hot at all times, so anytime the battery is connected, the fuses have power to them. If there is power, then you would move to the inside fuse panel and test there for power in the same way. The small fuses also have the test ports on their top ends. Find the brake light fuse or the courtesy light fuse and test there for power. If you have power at the distribution box, but none at the fuse4panel, it may be a bad connection at the junction block, where the wires enter inside the cabin. Good luck.
Bad connections at battery? Side post battery terminals are very prone to corrsion and poor connections. Other possibilities are weak/frayed fusible link, bad ignition switch.
Battery Constant 12v+ Positive Wire (+): Black/Yellow
Battery Constant 12v+ Positive Wire Location: Ignition Switch Harness
Starter Positive Wire (+): Blue/Red
Starter Positive Wire Location: Ignition Switch Harness
Ignition Positive Wire (+): Red
Ignition Positive Wire Location: Ignition Switch Harness
Accessory Positive Wire (+): Red/Yellow
Accessory Positive Wire Location: Ignition Switch Harness
Parking Light Positive Wire (+): Red
Parking Light Positive Wire Location: Low In Drivers Kick Panel
Power Door Lock Negative Wire (-): Add Actuator. This vehicle uses a central door locking system. When connecting a keyless entry, you will need to add a door lock actuator and some units will also require (2) extra relays.
Power Door Lock Negative Wire Location: To Drivers Door Only
Power Door Unlock Negative Wire (-): Add Actuator. This vehicle uses a central door locking system. When connecting a keyless entry, you will need to add a door lock actuator and some units will also require (2) extra relays.
Power Door Unlock Negative Wire Location: To Drivers Door Only
Door Trigger Negative Wire (-): Red/White
Door Trigger Negative Wire Location: In Black Plug, Above Hood Release
Domelight Supervision Wire: Use Door Trigger, Requires Relay
Domelight Supervision Wire Location: N/A
Horn Negative Wire (-): Red/Green
Horn Negative Wire Location: At Steering Column Harness
Tachometer Wire Negative Wire (-): Black/Blue
Tachometer Wire Negative Wire Location: At ECM, Under Drivers Side Dash
Brake Light Positive Wire (+): White/Black
Brake Light Positive Wire Location: At Switch Above Brake Pedal
CODE ALARM SYSTEM
Used on:
Impreza 1996-2001
Legacy 1995-1999
Forester 1998-2000
Battery GP-23A
Lock: Left button will lock all doors. Double chirp indicates locked.
Unlock: Right button will unlock driver's door only. Hold unlock button app 6 seconds, it will unlock all doors including rear gate. Single chirp indicated unlock.
If the car chirps or lights flash 4x the alarm was triggered.
Panic. Press both buttons to activate emergency honk and flashing lights.
Valet mode: With optional alarm onlyPress the red alarm button on the left of the steering wheel. The light will quickly double flash. To re-set back to normal mode, press the red alarm light button again
Battery failed and lights flashing?
Parking lights will flash when the vehicle's battery is disconnected and reconnected.
To stop lights from flashing, either:
Press remote transmitter "UNLOCK" button once OR turn the ignition switch to the "ON" position and press programming button for one second (see below).
The vehicle interior (courtesy) light and door open warning light (DOOR AJAR indicator) will then illuminate for 60 seconds when the ignition is turned off, or until the doors are locked with the remote transmitter. Yes, the dashboard instrument panel lights will flash when the parking lights flash.
Programming or Overriding the Alarm when you have lost the remote
Open driver's door.
Turn ignition key to 'On'
Press and *hold programming button* in (see diagram, button under dashboard)
After 15 seconds the the door locks will cycle 3 times. Do not release Programming button.
Press lock (left) button the remotes to be programmed. The door locks will cycle one time. Exit programming mode by releasing Programming button under dashboard and turning key to off.
Code Alarm Programming Button is under dashboard on the kick panel by the driver's left knee, left of the steering column. If you can't find it, it might still be tucked up in the wiring harness higher up in that same general area. The botton is recessed in a plastic ring (see diagram).
This button must be pressed while programming remotes or if the battery was disconnected and the lights are flashing.
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