Start with the exact car and component.

Groundwork covers a US-market 2015 Honda Fit gasoline model and a US-market 2017 Mazda3 with a SKYACTIV-G gasoline engine.

Use your vehicle records

1. Check the model year, make and model in your vehicle documents and matching owner’s manual. Registration date may differ from model year.
2. Confirm the market and engine. Jazz, Fit Hybrid, Axela and diesel models are outside these plans.
3. Compare the actual remote, lamp or other component with the official manual. Aftermarket hardware may follow another procedure.

Similar car, different part

The 2015 Fit’s conventional screw-fastened remote uses a CR1620. Its removable-key Smart Entry Remote uses a CR2032. The 2017 Mazda3 transmitter uses a CR2025. Match the actual design before buying a cell.

Honda key reference · Mazda key reference

If you are unsure

Save a preparation record with your model unconfirmed. Execution stays unavailable until it matches. Ask your service provider to identify the equipment; no VIN, plate or photos are required here.