1973 mercewdes benz anti theft system how to disable or bypass

Anti theft system cannot be canceled or bypassed. There will be a reason the system has turned on. Start with the silly stuff first. Is it the correct key for that vehicle? Is the vehicle's battery fully charged? Change the battery in the key fob. This often causes a problem because the vehicle's security system isn't getting signal from the key so does not turn off the anti theft.
What exactly is happening? This can give clues as to why it's happening.

I got this free Pdf manual from reliable-store for free and I don't think Ive visited a mechanic or fixya for help for more than 3-4 times out of the 20 times I fixed the chipper in these 4 years

Question edited for clarity and correct name of vehicle.

You can't bypass it Cherie, it involves transponder chips, receivers and the engine computer (ECM).. The anti-theft system is there to stop theft of the vehicle, basically what you are trying to do. You have to fix the system, not find a way around it. This is the reset. As long as you battery is good and fully charged, it should only need doing once.

Just leave the key in the run position and the "Theft System " light on the dash will be flashing. Leave the key on for about 10 minutes and the light will stop flashing and go on solid. Then the theft system is disable.

how to over-ride anti-theft so car will start? (Chevrolet Cavalier)

https://www.google.com/search?q=chevy+cavalier+theft+system+bypass

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Hello,

The key has the chip for the anti-theft--may not be the anti-theft.
TDC/Firing Order/fuel/spark/compression/timing chain alignment (dots)
TPS (Throttle position sensor) - Bypass by holding gas pedal down and starting.

Hope this helps--

Factory anti theft systems are integrated into the vehicle's computer and cannot generally be easily disabled. You can, sometimes , convince them the correct signal has been sent but you cannot bypass them

The anti theft is in the computer program. You may have to have it reflashed at the dealership.

most car anti theft systems can be disabled in the following way... (aka follow the link)

DISABLE ANTI-THEFT

U can bypass it (called the VATS system) but not fully disable it, what is done mimics the key code to fool the VATS module into sending a OK to start signal to the fuel injection computer (called the ECM). go to the web link below for instructions on the bypass.

http://vats.likeabigdog.com/

On a 2003 Chevy Maibu the theft system light comes on and blinks when the system is triggered. The car will not start and the fuel pump cuts out. You must turn key to on and have all doors closed. Keep the key to on for 10 mins til theft light turns solid and then disappears. Then turn key to start and it should fire up.