Question 1

What is the cheapest way to handle all-keys-lost on my 2017 Murano?

Accepted Answer

Call a mobile locksmith before you call the dealer or a tow truck. Nissan dealer quotes for all-keys-lost on this generation Murano tend to run high, and they usually can't do it same-day - they may need to order the fob, schedule the programming, and sometimes the vehicle has to sit there.

Here's what the job actually looks like when I come to you in Rancho Bernardo or 4S Ranch: I plug into the OBD port, access the immobilizer, wipe the existing key registrations, and enroll the new fob from scratch. The emergency blade gets cut to your vehicle at the same time. I test every function - start, lock, unlock, liftgate - before I pack up. No tow. No overnight. No waiting room.

The all-keys-lost procedure on this platform does have a timed sequence built into the security system, so the job takes longer than a spare-key add. Budget about 45 minutes to an hour on site.

Question 2

Can you delete lost or stolen keys from my 2017 Murano so they no longer work?

Accepted Answer

Yes, and if your keys were stolen rather than just misplaced, this matters a lot.

The way the immobilizer registration works on this vehicle, programming new keys starts with erasing all previously registered fobs from the system. Only the keys physically present during the programming session get enrolled at the end. So when I finish the job, any lost or stolen fob that was previously registered is gone from the system. It won't start the car, and it won't communicate with the vehicle security system at all.

This is part of the standard programming process, not an add-on. You walk away knowing only the keys in your hand work.

Question 3

Does my 2017 Murano smart key have a hidden emergency blade inside it?

Accepted Answer

It does. There's a small release button on the back of the fob - press it and slide the metal blade out. That blade gets you into the driver door manually if the fob battery dies or the fob stops responding.

Once you're inside, you're not stranded. Hold the fob body directly against the start button - the Nissan logo side toward the button - press the brake, and push the start button. The vehicle can read the transponder through the fob casing at close range even with a completely dead fob battery. The dash may show a key-not-detected warning, but the start sequence still works.

A lot of Murano owners have no idea either of these things exist until they're standing in a parking lot at night wondering why the door won't open.

Question 4

My 2017 Murano starts fine but the fob buttons stopped working after a battery swap. What happened?

Accepted Answer

This is one of the more common complaints I see with this fob. The car starts because the transponder function is separate from the remote functions - the immobilizer side can stay synchronized while the remote side loses its pairing if the battery was fully dead for a period of time or if the contacts got disturbed during the swap.

First, confirm the CR2032 is seated flat and both contacts are making clean contact - a slightly tilted battery will power the fob inconsistently. If the battery looks right and the buttons still do nothing, the remote registration has drifted and the fob needs to be re-synced to the body control module. That's not something you can do with a button sequence on this vehicle. It takes a diagnostic tool. The good news is it's a quick fix if the fob itself isn't damaged.

Question 5

How do I know if I need a whole new fob or just a repair on my existing one?

Accepted Answer

Bring what you have. I can test it on site.

A fob that starts the car but has dead buttons usually just needs re-registration. A fob that does nothing at all - no start, no buttons - after a fresh CR2032 is either damaged internally or has lost its registration entirely. Physical damage to the circuit board inside, cracked solder points from a drop, or water intrusion are the things that push you toward a replacement rather than a re-program.

The dealer part number for the OEM fob is on file, but quality aftermarket shells and replacement fobs are also available for this generation Murano. Either way, I cut the emergency blade and program everything together so you leave with a fully working key, not just a fob that unlocks the doors.

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