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Mazda6 Navigation SD Card

Only the 2016-2021 Mazda6 uses the Gen 6 Mazda Connect navigation SD card. The 2014-2015 cars ran an older TomTom-based head unit with its own incompatible card system. Everything that’s common across the Gen 6 platform (card encryption, VIN-locking, region codes, counterfeit warnings, slow-load fixes) lives on Navigation SD cards and map updates and nav SD performance. This page covers only what’s specific to the Mazda6.

2014-2015 cars are TomTom, not Mazda Connect

Section titled “2014-2015 cars are TomTom, not Mazda Connect”

The North American 2014-2015 Mazda6 shipped with a 5.8-inch TomTom-based navigation unit, the same system as the 2013-2015 CX-5. Mazda published a separate TomTom navigation manual for these years. The 2016 refresh replaced it with Gen 6 Mazda Connect and the 7-inch screen.

Nothing on the rest of this page applies to a 2014-2015 car. The TomTom unit takes a TomTom map card, updates through TomTom’s own software rather than Mazda Toolbox, and a Mazda Connect card will not work in it. There is no card that adds Mazda Connect navigation to these cars; that would be a head unit swap.

Where the slot is

Section titled “Where the slot is”

On 2016-2021 cars, the SD card slot is inside the center armrest compartment, next to the USB ports. It’s a vertical slot: drop the card in, then push down a short way to engage the spring-loaded lock. Push down again to release it. Insert and remove with the ignition off.

The card is a full-size SD card, not microSD.

Which trims came with navigation

Section titled “Which trims came with navigation”

The slot is present on every 2016-2021 Mazda6 regardless of trim; navigation is unlocked by a valid VIN-paired card, not a different head unit. On U.S. cars, the card came from the factory on Grand Touring and above. Sport and Touring trims shipped without one, and a dealer-ordered card adds full navigation to those cars with no other hardware.

Part numbers

Section titled “Part numbers”

The North American Gen 6 card is shared across the lineup: one part fits the 2016-2021 Mazda6 along with the Mazda3, CX-3, CX-5, CX-9, and MX-5 of the same era. The original part number BHP1-66-EZ1N has been superseded as map editions roll forward (BHP1-66-EZ1P, then BHP1-66-EZ1T); each revision is the same card with a newer database. Order by VIN through a Mazda dealer or parts.mazdausa.com and you’ll get the current revision for your region. Other markets use different part numbers for their map regions, and a card from the wrong region will be rejected.

Map updates through Mazda Toolbox

Section titled “Map updates through Mazda Toolbox”

New cards include three years of free map updates through Mazda Toolbox, the desktop app that rewrites the card over USB. After the free window, updates are paid, roughly $85–140 per region. Updates are locked to the card’s original region.

Used cards and clones

Section titled “Used cards and clones”

The card pairs to the vehicle after roughly 100 km (about 60 miles) of driving. After that, a used card from another car won’t work in yours unless a dealer re-codes it, which is why cheap “tested working” cards on eBay are a gamble. A sector-by-sector clone of your own card is a valid backup for the same car. The full sourcing and counterfeit guide is on the platform page.

Firmware note

Section titled “Firmware note”

Remove the nav SD card before any firmware update. A card left in during a flash can be corrupted, and a corrupted card means a replacement, not a re-download. The card goes back in after the CMU finishes rebooting. Procedure is on the firmware update page.

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