How can I disengage alarm so not going off at all hours of the day and night?

Possible bad ground or a fuse box/relay issue I would think.
Definately not safe to drive at night!

isa this car a ford or what make as i might be able to tell you how to reset the key failing which call the dealer

I would go to the positive terminal on the battery anjd check for black hard build up on the post and inside the terminal. This is lead sulphate and cause a high resistance to any high current flow. Clean both with sand paper until shiny and refit and tension properly. Do the negative also as it will have build up but to a lesser degree. If the battery lead runs through a connection box Check for tight connections there also. As to towing most towers have a wheel rack that fits under the tyres and lifts them clear of the road so it can be taken to to a shop.

When batteries get cold they loose voltage.
The car alarm probably thinks someone is tampering with the vehicle.
Check car battery and alarm backup battery for poor functionality and replace.

1994 Toyota Camry is not equipped by the manufacturer with an alarm system. The only suggestion I have is to remove the aftermaket stuff from your vehicle.

Ask the dealer mechanic to replace the camshaft position sensor again. Remind them that just because it's new, doesn't mean it works.

They should also check the wiring from the ECM to the sensor for continuity, to ensure that the ECM is actually seeing a signal and it's not being shorted somewhere.

yes double check the oil level first in case its empty might void your warrenty

Not positive on this so consider only. The o2 sensor is what actually tells everything else what is going on with emmission and everything else adjusts to what info it relays. The o2 is also subjected to extreme temps and cooling cycles. So, instead of spending money on no answer diagnostism give replacement of o3 sensor so consideratio. If you choose to replace, wd40 and let exhaust cool down. Good Luck.

I have just had my Toyota Dealer solve this very same problem. I purchased a 2003 Toyota Camry second hand. A great car, except for the car alarm going off when the temperature dropped outside at night. Neighbours were not impressed. The problem was in a electrical relay that talks to the ‘Body Control Module’ (damn computers in cars). This is part of the car electrics that controls things like 'auto lights off' when you lock the car, 'power windows' after you switch off the ignition, 'central locking' and a few other important things like 'interior light auto off' (so you don’t flatten your battery if you accidently leave it on). The faulty relay cost me $450 to replace, including labour, but everything works great now and most importantly, no car alarm at night. I cannot guarantee that yours is the same problem but my best advice is to take the to a Toyota dealership and get one of their mechanics to test it properly (they plug your car into a test piece of equipment that can check it properly). Shouldn’t cost you any more than $100 to find the fault and to get a quote to get it fixed properly with a guarantee.

Same problem here but with a Toyota Sienna '99. It took $600 in diagnostic work but the problem was a low voltage electrical short in a switch that was part of the passenger door lock. Specialty shop found it by placing voltage testing equipment on 4 to 6 wires at a time that ran into the cars computer. They recorded any voltage spikes over all these wires 24hrs/day over 3 days to find the bad switch. Snipping the wire to that switch meant the alarm would always go off if the locked car was opened with a key in the passenger door lock but we we're ok with it. Car was about 5yrs. old when this ocurred but we never had another problem of any kind with it for another 4 years. Thanks, Dan