Help your key send power where it needs to go with the Standard Ignition Ignition Starter Switch US-402. It is a direct-fit replacement for many vehicles, among them the 2007-2015 Mazda CX-9, 2006-2015 Mazda MX-5 Miata and 2007-2012 Mazda CX-7. See the "Vehicles it fits" section for the full list and engine details.
The ignition starter switch is the electrical side of the ignition. As the key turns through its positions, the switch routes power to the accessory, ignition, and starter circuits. If a worn switch is causing a no-start, a dash that stays dark, or power that cuts out, this unit replaces it.
- Quality control: Standard Ignition is a global manufacturer of original equipment ignition products. It controls quality through every stage of production, from components to the finished switch.
- Copper alloy conductors: These give superior electrical conductivity with low resistive losses.
- 100% tested: Each switch is tested to verify both its mechanical and electrical switching performance.
- High-grade construction: The switch is built from high-grade materials for proper fit and function. Its robust design is made for the demands of professional technicians.
Before replacing the switch, diagnose the cause of the symptom. The battery, cables, starter, and wiring can produce similar complaints.
Interchange: CS785 · LS1084 · KS6785 · GP7A66151 · LC7066151
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
CS785, LS1084, KS6785, GP7A66151, LC7066151, US-402
Frequently Asked Questions
What does an ignition starter switch do?
It is the electrical switch that the ignition key operates. Turning the key routes power to the vehicle's accessory, ignition, and starter circuits.
Which vehicles does the US-402 fit?
The US-402 fits many Mazda models, among them the 2007-2015 Mazda CX-9, 2006-2015 Mazda MX-5 Miata and 2007-2012 Mazda CX-7. See the "Vehicles it fits" section for the full list.
What are signs this switch may need replacing?
Signs include no response when the key is turned to start, a dash or accessories that don't power up, or power cutting out. Diagnose first, since the battery, wiring, or starter can cause similar symptoms.
Is the US-402 tested before it ships?
Yes. Standard Ignition states that its switches are 100% tested to verify both mechanical and electrical switching performance.
What numbers does the US-402 interchange with?
It interchanges with CS785, LS1084, KS6785, GP7A66151 and LC7066151.
