Left lights on Suzuki Vitara and now can not unlock the door

Remove key from ignition switch.
Close all doors.
Open drivers door
Insert key and turn to ON position and within 10 seconds turn key off and remove key.
Within 20 seconds Close and open drivers door 3 times.
Insert key and turn to ON position and within 10 seconds turn key off and remove key.
Locks should now lock and unlock automatically to confirm you have entered programming mode.
Press the UNLOCK button on remote and locks should cycle to confirm programming.
Repeat step 8 on each additional remote.
Exit vehicle with keys and remote, close door test remote(s).
And I personally suggest you find a professional key fob installer in your area. he will help you properly
Thaks

Suzuki Grand Vitara sunroof window Questions & Answers ...

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Sunroof won't close (1999 Grand Vitara) - Suzuki Forums: Suzuki ...

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the doors all have door switches
if one opens the lights light.
what is the question here, cant figure it?

the starter uses 10x more elect. power than the head lamps
or 100x more than dash lamps. it means little.
what matters most is jumper cable starts.
does it crank with jumper cables to a running, donor car,(aaa jump)
no bad starter
no, bad starter key line( immobliizer or such) ask how to test.
yes, cranks great, now.
that means the battery was dead,
i charge the battery and it now cranks, due to lights left on or
charge system failure, if battery goes to 13.3 to 15v running good
if on the charge system failed. (causing battery discharge)
if after charging a battery it will not crank car, its a bad battery (jumps ok)

have you had the battery checked for holding charge ? has alternator had charge rate checked ? 13-14 volts is recommended,if these ok and still have all these symptoms get the ECU checked,hope this helps

don't have 2 fobs?
it cam with 2,
and the battery must be good.(for buttons to work on fob)
never run any car with only 1 fob or one key.
or get locked out.
are you saying the metal cut key end (pure mechanical ) failed?

my car has a real key with a a transponder inside .
it can open 2 ways, the keyfob buttons, (takes a good battery)
and the key metal end.

get a spare fob and program it.
http://blog.keylessentryremotefob.com/2013/07/2008-suzuki-grand-vitara-key-fob-remote.html

now you have 2 like you should.

to the left of my left knee mounted on the interior wall was a large fuse panel on my 01 grand vitara.

Programming
When
Remote control buttons operated repeatedly while vehicle out of range and system becomes inoperative. System malfunction.
How
Ensure ignition switched OFF and all doors closed. Proceed as follows: Within 10 seconds, open driver's door and switch ignition ON. Within 10 seconds of switching ignition ON, switch ignition OFF. Within 20 seconds of switching ignition OFF, press and release driver's door contact switch 3 times. Within 10 seconds of releasing driver's door contact switch, switch ignition ON then OFF. Within 20 seconds of switching ignition OFF, press and hold both remote control buttons in turn for at least 5 seconds. The driver's door should lock and unlock once. Within 5 seconds of driver's door locking/unlocking, press remote control lock button Fig. 1 [1] or unlock button [2]. Programming procedure complete. Confirm programming has been successful by locking and unlocking vehicle.
NOTE: A maximum of 2 remote controls can be programmed.

The car Battery was flat. Replaced and going like a gem.

the indicator is for any ELECTRICAL problem with the car .so get the electrical system checked especially the ALTERNATOR.for proper charging .