How to disconnect and replace the ignition lock cylinder and ignition switch on Mazda 3?

Disconnect the cable on the negative on the battery. Disassemble the lower side of the trim panel of the driver side, knee bolster (where fitted), the bottom cover of the upper and bottom cover of the steering column, and also the steering column to the lowest level. Be careful and do not take the ignition switch and the key lock cylinder at the same time because it may harm the steering column. Turn the locking lever down and pull the electrical connector off the ignition switch, and press the release tabs to remove the ignition switch out of the steering column. When installing, make sure that the switch needs to be turned on and on the other hand, it needs to be turned off. In the case of the key lock cylinder, insert a small screwdriver or pick on the release button of the key lock cylinder and remove the key lock cylinder with the ignition key on ACC position. Installation To install the key lock cylinder, position the key lock cylinder into the housing and push it until it clicks. Ensure that the ignition switch is in a good working condition in the OFF, ACC, BIN, and START positions, and fit it in the reverse order of removal. Lock cylinder replacement does not require the lock cylinder to be removed to strip off the illumination ring, but should be disconnected off the illumination ring, the lock tabs disengaged and the illumination ring removed, making sure it clips together during installation.

Genuine Mazda 3 Ignition Switch

Starter Ignition Switch

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6 Ignition Switches found

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Mazda 3 Power Switch Part Number: BDGF-66-3S0A
$57.43 MSRP: $76.59
You Save: $19.16 (26%)
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Product Specifications
- Other Name: Switch, Engine Start; Power Switch, Start Button
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Ignition Switch Part Number: BP4K-66-151B
$57.46 MSRP: $76.62
You Save: $19.16 (26%)
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Product Specifications
- Other Name: Switch
- Replaces: BP4K-66-151, BP4K-66-151A
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2004-2013 Mazda 3 | i, Mazdaspeed, S, SP23 | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Power Switch Part Number: BDGG-66-3S0A
$63.55 MSRP: $84.75
You Save: $21.20 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch, Engine Start; Power Switch, Start Button
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2024 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Power Switch Part Number: BHR1-66-3S0A
$77.95 MSRP: $103.95
You Save: $26.00 (26%)
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Product Specifications
- Other Name: Switch, Engine Start; Power Switch
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2016 Mazda 3 | i Grand Touring, I Sport, i SV, I Touring, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Power Switch Part Number: GS1D-66-3S0A
$79.29 MSRP: $105.73
You Save: $26.44 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Switch, Engine Start; Power Switch
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2010-2013 Mazda 3 | i, Mazdaspeed, S | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Power Switch Part Number: BJS7-66-3S0
$90.48 MSRP: $120.65
You Save: $30.17 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Engine Start; Power Switch
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, i Grand Touring, I Sport, i SV, I Touring, s Grand Touring, s Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS

Mazda 3 Ignition Switch

The Mazda 3 Ignition Switch is the door that opens the electrical and engine systems of the car so that the car can be started. The Ignition Switch activates and deactivates parts such as the radio and windows, powers the starter solenoid, and opens fuel for combustion by turning a key, pressing a dashboard button, or transmitting a remote signal to the computer. The initial models of the Mazda relied purely on a mechanical key, whereby the proper blade had to be utilized to move the Ignition Switch, rotate it, and discourage theft by the distinctive cut. Subsequent versions retained that metal key but included an immobiliser which checks a coded transponder hidden in the key head before allowing current to pass. Mazda 3 models in modern times go a step further with a push button that completely replaces the blade but still requires the transponder's approval, as the fob can be kept in a pocket so that the car opens more quickly and the number of moving parts is reduced. All Mazda units, irrespective of style, are based on a hardcore plug-and-play design specific to the vehicle, thus making replacement of a worn-out part simple. Even with the possibility of turning on the engine by manipulating switch wiring, the immobiliser on newer vehicles makes it significantly harder to attempt hotwiring the vehicle, but it is also much more secure.

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Mazda 3 Ignition Switch Parts and Q&A

Power Switch
GS1D-66-3S0A
Q: How to disconnect and replace the ignition lock cylinder and ignition switch on Mazda 3?
A:
Disconnect the cable on the negative on the battery. Disassemble the lower side of the trim panel of the driver side, knee bolster (where fitted), the bottom cover of the upper and bottom cover of the steering column, and also the steering column to the lowest level. Be careful and do not take the ignition switch and the key lock cylinder at the same time because it may harm the steering column. Turn the locking lever down and pull the electrical connector off the ignition switch, and press the release tabs to remove the ignition switch out of the steering column. When installing, make sure that the switch needs to be turned on and on the other hand, it needs to be turned off. In the case of the key lock cylinder, insert a small screwdriver or pick on the release button of the key lock cylinder and remove the key lock cylinder with the ignition key on ACC position. Installation To install the key lock cylinder, position the key lock cylinder into the housing and push it until it clicks. Ensure that the ignition switch is in a good working condition in the OFF, ACC, BIN, and START positions, and fit it in the reverse order of removal. Lock cylinder replacement does not require the lock cylinder to be removed to strip off the illumination ring, but should be disconnected off the illumination ring, the lock tabs disengaged and the illumination ring removed, making sure it clips together during installation.