Car randomly will not start message reads service security system, Dearership cannot detect a problem

you need a coile

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you cant.!
the operators guide tells you how to disable the door alarms
but not how to bypass the IMMOBILIZER
that be by DESIGN.
not possible.
(car has security keys, right>? for the IMMO.,! cluster lamp)
if it was easy, all cars would be easy to steal now.
and are NOT.
a 21s century deal. here.
and in usa , the fed. LAW. (and stricter every year !)

what to do is scan PCM to find out what is failing!
or get car serviced
you have 2 choices
get it serviced
or buy the FSM book read the pages on alarm, scan it and do the tests stated in the book, i bet you wont read the book.

just 4 bucks to read it

https://suzukipitstopplus.com/Products/10057-2003-grand-vitaragrand-vitara-xl-7-service-manual.aspx


RTM
then ask questions.
we can answer.
but yes, a great dream it was...... sorry.

The vehicle is having problems reading the tiny metal security slug in the ignition key. When you used a key to unlock the door, you disabled the security system so it started. There are a variety of different resistance values on the slugs in the key. You can have someone with a ohm meter read the resistance of yours and install a fixed resistor of the same identical value to the wiring for the key security system. You may alternatively spray contact cleaner or a bit of WD-40 in the ignition switch to clean it off. Insert and remove the key several times, wiping it off each time you remove it.

Many times the lock cylinder fails to detect the key and so it shuts the car off. Other times the master relay goes bad which happens on older Hondas and it can cause the same problem. I would locate the master relay, tap it with a wrench and see if it starts. If so its the relay and relatively cheap to replace. If its the lock cylider then its much more costly. If the key liggt blinks normal when you start the car but then it dies out randomly or wont start, then its the lock cylinder failing to read the security key. Also remove any thing attached to the key that may be heavy.

Best to read the codes first---code p0300 refers to random multiple cyl-- misfire detected causes-- spark plugs---HT leads--ignition coils--wiring.
code p0301 refers tocylinder 1-- misfire detected causes ---engine mechanical fault---wiring---ignition /fuel system ---injector---ECT/Maf sensor(Mass air flow) ECM.
code p0305 refers to cylinder 5 misfire detected causes ---same as 0301
code p0316 refers to misfire detected during start up -first 1000 rpms---causes--- engine mechanical fault---wiring----ignition/fuel system---injector. I would run a fuel system pressure pressure test as the common causes here is the fuel/injectors

PLEASE RATE THIS REPLY FOR ACCURACY

if you have an anti theft syestem you need to take it out or by pass it if its lojack good luck but if its an other kind i could help you out

The car is not reading the key and thinks someone is trying to steal it. Try another key or see a dealer.

Regardless of the battery age,sounds to me as if you have a drain on the electrical system First thing to do is completely recharge battery. An initial quick inspection might show a light staying on, whether it be a door , reading, glove box, or trunk lights, among many other things. If nothing is obvious an electical reading of the system while removing and reinstalling fuses will show the circuit causing the drain, Hope this helps

the battery is located under the rear seat, check battery connections. if connections are tight replace starter.