Replaced ignition lock cylinder in my Mazda 3. How do I reprogram it to start the car?

Replaced ignition lock cylinder in a 2004 Mazda 3, automatic. How do I reprogram it to start the car?
Experienced mechanics share their insights in answering this question :
Hi there. Put the key into the ignition and turn it on. Then press the lock button on the key fob and turn off the ignition. Then turn on the ignition and press the unlock button on the key fob and turn off the ignition. Then turn on the ignition and press the trunk button and turn off the ignition. Now, put the key in the driver door and unlock the door and lock the door. At the same time, push the lock and unlock buttons on the key fob. This will finish the programming sequence. Then the vehicle should restart up. If you need further assistance with reprogramming you key fob, then seek out a professional, such as one from Your Mechanic, to help you.

How to Identify and Fix Common car Problems ?

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Most vehicles will require a new key when replacing an ignition switch, as the old key has worn down and is incompatible with the new set. However, some cars may be able to use an existing key, depending on the condition and make of the key.
In either case you cannot use your key; it will be a problem since the chip is programmed to your vehicle and will require programming. You may have to replace the entire housing on the column and have the new ignition key reprogrammed to start the car.
If you lose a key, an Authorised Mazda Repairer will reset the electronic codes of your remaining keys and immobilizer system. Bring all the remaining keys to an Authorised Mazda Repairer to reset. Starting the vehicle with a key that has not been reset is not possible.
There are several reasons why your vehicle`s ignition switch may fail. Some of these include broken springs, worn ignition switch contacts, and temperature problems, which may prevent you from even getting your vehicle out of the garage.
As a general rule, you cannot reprogram your car key yourself. There are very few models that allow for this (although the internet might tell you otherwise) but this can vary depending on the country and the manufacturer.
Vehicle KeyCodes are located on the original vehicle invoice to the dealership. There is a small white bar coded tag sent with most new vehicles that also has the key code printed on it. Dealerships should make a practice of comparing the tag`s keycode numbers to the keycode listed on the invoice.
A: A coded lock cylinder has the correct key code inside of the key cylinder that will match your car key and a un coded lock cylinder has to be coded to the car key specifically. Most of the new key cylinders can be coded to the original key by a local lock smith in your area.
Take off the negative lead of the battery, Sit in the driver`s seat of your Mazda turn headlights on and off press horn Push down and release the brake pedal five times consecutively. Wait 10-15 minutes to reconnect and ECU should be reset.
REFLASHING – Reflashing is a proven technique where a vehicle immobilizer is programmed with a special file which restores the EEPROM to the original factory values (same condition as a new immobilizer). After reflashing and reinstallation, the vehicle will be in “learn mode” and able to accept new keys.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Replaced ignition lock cylinder in my Mazda 3. How do I reprogram it to start the car?
ANSWER : Hi there. Put the key into the ignition and turn it on. Then press the lock button on the key fob and turn off the ignition. Then turn on the ignition and press the unlock button on the key fob and turn off the ignition. Then turn on the ignition and press the trunk button and turn off the ignition. Now, put the key in the driver door and unlock the door and lock the door. At the same time, push the lock and unlock buttons on the key fob. This will finish the programming sequence. Then the vehicle should restart up. If you need further assistance with reprogramming you key fob, then seek out a professional, such as one from Your Mechanic, to help you.

My car will not start Intermittently. I purchased a new battery 2 weeks ago and yesterday the car wouldn’t start. Got a jump and
ANSWER : The issue you are having is probably due to an intermittent fault in the starter motor itself or a deficiency in the starter electrical circuit, for example a large voltage drop due to a poor ground or a high resistance connection. These issues can be readily diagnosed and resolved on a mobile basis if you request a hard starting diagnostic. If you request that diagnostic, the responding certified mechanic will get this resolved for you promptly. Based on Toyota’s Factory Service Manual, the battery should not be disconnected if the vehicle engine is running. The battery acts as a large resistive voltage sink and consequently taking the battery out of the circuit, while the alternator is still running, can create a voltage spike on the car’s electrical system which is not good for voltage sensitive components such as the engine computer. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

The car wont start because the ignition lock is jammed, can i fix it without buying a new ignition lock or repair kit?
ANSWER : If the ignition key will not turn, try a different key if you have one to see if the original key is worn. If you do not have another key then I suggest getting another lock. You could also try getting some help from an auto locksmith who can make another key for you. If you need some help with this, feel free to contact a certified professional who can properly diagnose the issue with your ignition system. Good luck.

New ignition lock cylinder and assembly installed but won’t start up?
ANSWER : Your car thinks you are trying to steal it so it is not activating the fuel injectors. Modern cars have security systems that communicate with the key via a chip inside the key, but in 1990, I don’t think your car is quite that sophisticated. Before you try anything else, try a simple re-boot. Close and lock the doors, if you have a remote, use that. Wait a few moments, then unlock the doors, get in the car, close the door and try to start the car. If that doesn’t do the trick, you may need help from someone with a Nissan Designated scanner to read the security system. It may even need to be programmed for a new key. You can have that done by contacting Your Mechanic. They will send a technician to your home or office to check out your Nissan right there on the spot.

My car stutter starts, but only after driving it for a few minutes.
ANSWER : Hey there. This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping properly, but the fuel may not arrive at the fuel injectors at the proper psi. When this happens, this can cause a lean fuel condition which may cause the car to hesitate, misfire, or stall. If you would like to have an expert pinpoint the issue, a certified professional from YourMechanic can come to your car’s location to inspect the hard start problem and confirm which repairs are needed.

Charging warning light comes on when i turn the key and try to start the car and the car want start but when someone tried to give
ANSWER : Hi there:

If you recently replaced your battery, the issue may be caused by a malfunctioning alternator or other electrical component that comprises the charging system on your Nissan Sentra. The best way to find out which item specifically is faulty, is to have a professional mobile mechanic complete a car is hard to start inspection. This will allow the mechanic to determine the precise source of what’s going on with your Sentra and recommend or complete the right repairs.

How can i fix my locked ignition cylinder
ANSWER : If the key won’t turn in the lock cylinder, it is a mechanical issue. If this happened to me, I would be removing the steering column covers again to see what is physically keeping the lock cylinder from turning. As I am sure you are aware, your steering column is a complicated device with many small things that can go wrong.

Sometimes, if your steering wheel is cranked to one direction, the force of the front wheel will push against the steering wheel locking pawl making it difficult to turn the key. If this is the case, simply turn the wheel in the direction you can to take this pressure off of the pawl. Attempt to turn the key at the same time. Outside of this problem, the key could be an issue if you are using the old one. If you have a new key, try removing it a flipping it over. This is often effective with old keys but rarely necessary with new ones.

If you should still need help, I recommend getting some assistance from one of our mobile experts who can diagnose the issue with your key for an accurate repair.

Good luck!

My car stutters after driving it for a few minutes – 2002 Toyota
ANSWER : This may also be caused by what is called the fuel pressure regulator. This is a unit that helps to maintain the fuel pressure at the proper level. When this is not working properly, the fuel pump may be pumping properly, but the fuel may not arrive at the fuel injectors at the proper psi. When this happens, this can cause a lean fuel condition which may cause the car to hesitate, misfire or stall. I would recommend having an expert from YourMechanic come to your location to diagnose your fuel pressure.