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Key fob would not work. Repalced battery, reset fod. Then reset other fob, maybe not in right order? now, neither fob works., and the car is "dead" won't start, or anything. No display. How can I fix this?
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Unfortunately, the website I found says there is no on-board method of programming your car for a new key-fob. You have to take the car to a dealer or to a key-maker (who may only charge half as much as the dealer)
I have the correct answer for you, but it is probably not what you want to hear. A 2001 Cadillac Deville has NO self-programming procedures for remotes. You can add transponder keys if you have the master key, otherwise you need to go to a professional to get them programmed because they need special equipment to communicate with the vehicle.
I would suggest a locksmith before the dealer as they are usually more affordable. We always recommend an ALOA (Associated Locksmiths of America) member, as their code of ethics means they will treat you fair.
I also suggest avoiding the dealer for the actual key fob remotes for your Cadillac Deville. My company sells factory OEM key fob replacements at a steep discount. Check this link to find your vehicle key fob. https://keylessentryremotefob.com/
auto right? there is a neutral/park relay on automatic transmission equipped cars. if it is broken or loose it wont let you to run engine (like you did not place the shifter to N or P position)
also for some US made cars you need to press brake pedal to start car, there is a switch for that you need to find its location on your car.
least possible option. your immobilizer is problematic. it can unlock doors but wont allow it to run engine.
OK, if the A/C system has been discharged of R134a for any length of time, the car may have to be reset by disconnecting the battery and reconnecting after a few minutes.
That's the way my 1990 Cadillac Deville is, as it's a safety measure for preventing low freon level operation of the compressor which can damage the compressor.
My 1997 Cadillac Deville Limo hasn't had any leakage issues, so I don't know if this would work on that late of a Cadillac.
After adding r134a to the low side, and if the compressor doesn't work, then this could very well be your problem.
Key Fob Auto Learn This procedure will first erase all known key fobs. The procedure will then program a single or multiple key fobs. Method 3 is a series of three 10-minute key cycles, for a total of 30 minutes. This procedure requires that you have a replacement key fob and the vehicle mechanical key. Important: All previously programmed key fobs will be erased upon completion of the 30-minute programming procedure. The order in which the key fobs are programmed will determine its numbering position within the RCDLR memory. The first key fob programmed will be key fob #1, and the second key fob programmed will be key fob #2. The number stamped on the key fob case is for reference only: #2 can be programmed as #1. Do not place any known good key fobs in the vicinity of the vehicle when programming. The vehicle must be OFF. Place the replacement key fob in the console pocket with the buttons facing forward. Insert the vehicle key in the driver door lock cylinder located in the driver door handle and cycle the key 5 times within 5 seconds. The DIC will display a message: OFF/ACC TO LEARN. Press the OFF/ACC portion of the ignition button. The DIC will display a message: WAIT 10 MINUTES, then it will count down from 10 to 0, one minute at a time. When the counter reaches 0, DIC will display OFF/ACC TO LEARN. Repeat steps 5-7 two more times, for a total of 30 minutes. The DIC will display a message: OFF/ACC TO LEARN. Press the OFF/ACC portion of the ignition button. A beep will occur and the DIC will display: READY FOR FOB 1. At this time all previously known key fobs have been erased. When fob 1 is programmed a beep will be heard and the DIC will display a message: READY FOR FOB 2. Additional key fobs can be programmed by taking fob 1 out of the pocket and inserting fob 2. If desired, up to 4 fobs can be programmed. Once 4 fobs have been learned, the DIC will display a message: MAX FOBS LEARNED, and automatically exit the program mode. If learning less than 4 key fobs, press the OFF/ACC portion of the ignition button to exit the program mode. Operate the active portion of each key fob in order to finalize the programming sequence and verify correct system operation. Good luck and hope this help's keep me posted, there are 3 other methods and the 5th method is a tech 2 scan tool that the dealer uses but this should work on your year of cadillac.
lock and unlock the doors with the key fob this usually resets the alarm. If the key fob doesnt work there is a procedure for resetting the system. But I can't remember off the top of my head but the owners manual does tell you how
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