Question about 1996 Oldsmobile Ninety Eight

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I have a 1996 olds 98, the other night the security light came on and now it will not start? tested resistance in both keys and the difference is .001. Niether key works. how do i get it to start again?

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Sorry dealer only

Posted on Nov 20, 2009

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1 Answer

My 98 Cadillac security system says wrong passsword and won't start .


Password or Passkey? My '98 deVille requires a special resister chip in the key. If you have the wrong resistance on the key it will not start and won't even try for three minutes.

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Does anyone know how to rewire a 98 Toyota Avalon cause no one wants to help me bypass the security and I been without a vehicle going on a month


Probably because no one thinks it can be done. I don't think it can be done. You have to convince the engine computer it is getting the right signal from the anti-theft module before it will allow the car to start. The GM system runs off resistor chips in the key. You can "trick" the system to recognize any key if you wire in a "resistor pack" with the correct sized resistance matching the old correct key's resistance reading. See, you just wire in between the key lock cylinder, will be a wire going to the anti theft module (which then signals the computer all is okay to start the engine) -on a GM vehicle you wire in a resistor pack in the wire to the antitheft module. There are approximately 15-20 different resistance readings in those key chips. Maybe Toyota uses a similar- google it!

Nov 03, 2015 | Toyota Cars & Trucks

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98 olds acheiva won't start, replaced starter and solenoid and tried the turn key on for 10 minutes then turn off and start, did not work I see no chip in my key but security light stays on and car...


If the security light is on, then it can only be one thing. The security system is failing and immobilizing your car. Go to this link and read up on the problem. The security light is a dead give away that the security is messed up. If you have no little black chip in the shaft of your key, then this means you must have a passlock that runs on the transponder. You need the PERMANENT fix from this site. http://vatspasslockpasskeysecurityhelp.yolasite.com/

Jun 16, 2011 | 1996 Oldsmobile Achieva

1 Answer

Theift lite comes on wont let engine run. 1996 Grand AM SE


Common problem is the "chip" in the key wears with time and eventually won't function in the car's VATS (Vehicle Anti Theft System). The chip itself is actually a resistor. The ignition requires a particular resistance before it will allow the car to start. You can test this by trying another key that has the chip. If the other key starts the car, you've identified the problem and need another key. If not, the car has a security issue that will likely need to be diagnosed at the dealer.

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you will have to go back to the dealer to have the keys and immobilizer reprogrammed

Aug 02, 2009 | 1996 Honda Accord

2 Answers

1996 Oldsmobile Achieva: Security light flashes upon startup


Here is what you do, but only when the SECURITY light flashes - if it is always ON or OFF it's no use.
Turn the key in the ignition to ON.
Wait for exactly 10 minutes ( SECURITY light will flash for 10 minutes and then stay on SOLID)
Turn the key to OFF
Wait 5 seconds.
Turn the key in the ignition to ON.
Wait for exactly 10 minutes.
Turn the key to OFF
Wait 5 seconds.
Turn the key in the ignition to ON.
Wait for exactly 10 minutes.
Turn the ignition OFF.

Start the car normally.
It has relearnt the keycode and you're good to go.
NOTICE - it takes 30 minutes to relearn, that's THREE cycles of ON - 10 minutes - OFF.

Good luck.

Jul 11, 2009 | 1996 Oldsmobile Achieva

2 Answers

Security light flashing and car won't start now


does it start at all, or does it run for about 1 second and shut off? if the latter, then it's the passlock system, and he could have a defective key or security module. the keys have a predetermined resistance value which activates the passlock system to prevent hotwiring. If it is the passlock system, then sometimes you have to wait 15-20 mins for it to reset before starting the engine.

Jun 20, 2009 | 1998 Oldsmobile Achieva

1 Answer

How troubleshoot ignition exchange computer fault?


DON'T KNOW WERE U GOT IGNITION LOCK & KEY.THE KEY HAS A BLACK DIODE IN IT THAT THE SECURITY SYSTEM READS.ONCE IT SEES THE CORRECT RESISTANCE THEN IT WILL START.U NEED TO TAKE TO OLD KEY TO THE DEALER AND HAVE THEM GIVE U THE CORRECT IGNITON LOCK CYLINDER AND KEYS

May 15, 2009 | 1996 Chevrolet Caprice

1 Answer

Program 2002 Mercury Sable Key


For convenience, I'm also including a list of other vehicles that these instructions apply:
Ford Contour ‘98–up
F-150 ‘98-up
Ford Crown Victoria ’97-up
Ford Escort 99-up
Ford Excursion ‘00-up
Ford Expedition ‘98–up
Ford Explorer ’98-up
Ford Focus ‘00-up
Ford Mustang ’96-up
Ford Ranger ’98-up
Ford Taurus ’96-up
Ford Windstar ’98-up
Lincoln Continental ’98-up
Lincoln LS ’00-up
Lincoln Mark VIII ’98-up
Lincoln Navigator ’98-up
Lincoln Town Car ’98-up
Mercury Grand Marquis ’97-up
Mercury Mountaineer ’98-up
Mercury Mystique ’98-up
Mercury Sable ’96-up
NOTE: These instructions may apply to more or less vehicles than those listed above. I cannot confirm that these procedures work for every year and model listed. See your dealer if to confirm this.
On-Board Programming Method "B" for Ford keys (1996 -early 1998 Ford, Lincoln, Mercury)
If you want to initiate a new master key.... 1. Insert new key into ignition cylinder and turn it to the ON (RUN) position. The security light on the dash will flash for fifteen minutes.
2. When the security light stops flashing, you have FIVE minutes to start the next step. Turn the ignition cylinder OFF and then back to the ON (RUN) position. The security light on the dash will flash for fifteen more minutes.
3. When the security light stops flashing, you have FIVE minutes to start the next step. Turn the ignition cylinder to OFF and then back ON (RUN) position. The dash will flash for fifteen more minutes.
4. After the security light stops flashing the third time, the new key has been programmed into the vehicles computer and will operate the car. It has replaced ALL the previous electronic key codes and is the ONLY key programmed into the vehicles computer.
If you want to add a key.... 1. Insert an existing key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the existing key and, within 15 seconds, insert the new key and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming the key into the vehicle.
5. Don't attempt to start the vehicle with any key for at least 1 minute.
On-Board Programming Method "C" for Ford keys (Later 1998-newer Ford, Lincoln, Mercury)
If you want to initiate a new master key.... 1. This requires that the vehicle be connected to special dealer equipment. There are two ten minute delays involved while this device erases all existing key programming and sets up the vehicle computer to accept new key codes. Two new keys should be ready because the system requires a minimum of two keys in the program. After the first two keys are programmed, additional keys can be entered individually by following the instructions for adding duplicate keys (below).
If you want to add a key.... **You must have two original keys to perform this procedure. If you only have one key, you WILL have to take it to the dealer to get it programmed**
1. Insert and existing (working) key into the ignition cylinder.
2. Turn the ignition cylinder ON (RUN) and back to OFF. Ignition should stay on for at least ONE SECOND.
3. Remove the existing key and, within TEN seconds, insert a second working key and turn it to ON (RUN) and the back OFF. Ignition must be in ON for at least ONE second, but no more than TEN seconds. Remove the key.
4. Insert the new key before TWENTY seconds have elapsed and turn it to ON (RUN). Leave it the ON position for at least ONE second and turn back to OFF.
5. The security light will light up for THREE seconds to indicate that the new key has been successfully programmed.
6. To program additional keys, repeat steps 1 through 5
As a precautionary measure for all of the above procedures, you should wait at least one minute after you have performed this until you start your vehicle.

Mar 27, 2009 | 2002 Mercury Sable

1 Answer

When removing the iginition switch and putting a new one in it tripped the security computer chip or code. It will not reset wondering how to reset it.


did u use the correct key value? there are like 20 different numbers, they are not chips but just a piece of resistive wire. U have to use the correct key for your car, you find this out by measuring the resistance of the wire insert in your old key.

Mar 24, 2009 | 1996 Pontiac Sunfire

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