I have a subaru forestrr 99 trying to override the system and still wont start is there a definite way that it will start lost remote

Subaru Keyless Entry Security Alarm Immobilizer Key Remote Start Systems...

start with this link its explains how the security system works

Subaru Keyless Entry Security Alarm Immobilizer Key Remote Start... go to that site and scroll down it has detailed instructions on the factory alarm systems

Getting stuck in valet mode is so annoying, but it really IS possible to reset the Security Unit (SU). Though not mentioned how in the Owner's Manual (OM), it is possible to set Programming Mode (PM) while in valet mode, even if you have lost or replaced the remote. See the OM about switching from LOCK-ON-LOCK 10 times. It takes some practice, but the horn will beep when you are in PM, at which point you can reset your (old or new) remote.

See https://pixcl.com/2005-2008-subaru-forester-stuck-in-valet-mode/ for more detailed info.

Some you have to reprogramme them go on youtube

Have you checked your starter?

Try unlocking locking and unlocking your doors.Then try starting.Works sometimes to override the alarm.Otherwise contact dealership

FUEL PUMP MIGHT STILL WORK,BUT IT MIGHT NOT BUILD UP ENOUGH FUEL PRESSURE.ALSO COULD BE M A S,,,MASS AIR FLOW SENSOR,CHECK IT CLEAN IT,OR REPLACE IT..YOUR THROTTLE POSISTIONING SENSOR ALSO.IF IT MOVED OR FAULTY CAR NO GO.I HAD IT,REPLACED AWAY I WENT...OTHER SIMPLE IS FUEL FILTER

you HAVE to get a remote and unlock the car.the dealer may be able to turn it off with the obd2 system,you have to call subaru.

Use these instuctions if your Deville has an Analog Instrument Cluster
1. Press OFF and WARM buttons on Climate Control Panel (CCP) simultaneously.
(Instrument Panel Cluster (IPC) will light all telltales, then go blank) System is now in diagnostic mode.
Press PASSENGER COOLER button until “RFA” is displayed, then press FAN UP.
If “RFA DATA” is displayed, press FAN DOWN.
If “RFA OVERRIDE” is displayed, press FAN UP.
2. If “RFA 500 NO OVERRIDE” is displayed, press FAN DOWN.
If “RFA 501 PROGRAM FOB #1” is displayed, Press FAN UP.
3. IPC will show “0” on right side of Driver Information Center (DIC) display.
Press warmer button on climate control unit until “99” is displayed.
4. Press and hold TRUNK button on transmitter. While holding TRUNK button, press LOCK button and hold for one
second. Hold both buttons for a total of 3 seconds. Locks cycle when programming is complete (if remote is not
programmed within 30 seconds after entering “99” override display, system will default and you must begin again at
step 2.
5. To program a second remote, press FAN DOWN button until “RFA 502 PROGRAM FOB #2” is displayed, then press
FAN UP. Repeat step 4.
To exit system, press AUTO, MODE UP, MODE DOWN, or RESET.




Use these instructions if your DeVille has a Digital Instrument Cluster
1. Press OFF and WARM buttons on Climate Control Center (CCC) simultaneously. Instrument Panel Cluster (IPC) will
light all telltales, go blank then enter DIAGNOSTIC MODE. Press FAN DOW button to scroll through system until
“RFA” is displayed, then press FAN UP button. Press FAN DOWN button until “RFA OVERRIDE” is displayed, then
press FAN UP button. When “NO OVRD RF 500” is displayed, then press FAN UP button.
2. When “PGM FOBL 501” is displayed, press WARM button and “99” will be displayed in left upper corner of IPC just
below odometer. System is now ready to program remote.
3. Press and hold TRUNK button on transmitter. While holding TRUNK button, press LOCK button and hold for one
second. Hold both buttons for a total of 3 seconds. Locks cycle when programming is complete (if remote is not
programmed within 30 seconds after entering “99” override display, system will default and you must begin again at
step 2.)
4. To program second remote, pres FAN UP button until “PGM FOB2 502” is displayed, then follow steps 2 and 3 to
program second remote.
To exit system, press RECIRC or RESET buttons.

Disclaimer

my 1999 Subaru will fire up but wont stay running what could be the ius