Question 1

Do I have to go to the Subaru dealer to get a replacement smart key for my 2017 Crosstrek?

Accepted Answer

No. A mobile locksmith with the right Subaru-compatible programming tools can handle this at your location. The confusion comes from the fact that some general locksmiths skip Subaru smart key work entirely, so owners get turned away and assume the dealer is the only path. That is a tooling gap at certain shops, not a rule.

We carry the equipment to register a new fob to the 2017 Crosstrek's immobilizer and cut a working key blade on site. One visit, no parts on order, no waiting days for a fob to show up. Dealers do this fine too, they just take longer and charge more.

Question 2

What exactly is a smart key and why does my 2017 Crosstrek need it programmed?

Accepted Answer

A smart key is more than a remote. It carries a transponder chip inside that communicates with the vehicle's immobilizer every time you go to start the car. The immobilizer is looking for a specific encrypted signal from that chip. If it doesn't get the right answer, the engine will not run, or it starts and cuts out within seconds.

The 2017 Crosstrek also uses proximity-based entry on equipped trims, so the fob and the vehicle need to recognize each other at close range for the door handles to respond. A new fob that hasn't been paired to your specific vehicle is just a shell. The buttons won't control your locks and the push-button start won't see it until programming is done. That's why you can't just order one online and drop the battery in.

Question 3

How long does the dealer process actually take for a 2017 Crosstrek key replacement?

Accepted Answer

Longer than most people expect. Subaru dealers typically order fobs by VIN, which means the part has to come in before they can even book the programming appointment. On Subaru owner forums, members consistently report multi-day waits for that step alone, and scheduling the actual appointment adds more time on top.

For all-keys-lost situations, some dealers have sent security components out for reprogramming at a regional level, with owners reporting waits stretching close to two weeks for that specific scenario.

With EZ Car Keyz, an add-a-key job on this vehicle is usually done in one visit under an hour. All-keys-lost takes a bit longer because of a timed reset sequence built into the system, but it still happens same day.

Question 4

I bought a replacement fob online for my 2017 Crosstrek. Can you just program it, or is there a catch?

Accepted Answer

We can program aftermarket fobs in most cases, but there is something to check first. The fob has to be compatible with the specific system on your 2017 Crosstrek. The factory FCC ID on the fob matters here. If the one you bought matches what your vehicle calls for, we pair it with no issues. If it doesn't, it won't register no matter what tool is used.

Bring it along when you call. If it's the wrong one, we carry the correct fob and can swap it out on the spot.

Question 5

My 2017 Crosstrek key fob stopped working after I changed the battery. What went wrong?

Accepted Answer

This comes up more than you'd think. A few things to check right away.

First, confirm the new CR2032 is oriented correctly. The positive face needs to sit against the right contact. It sounds obvious but it's easy to flip during a swap. Second, look at the battery contacts themselves. Prying the fob open with a coin instead of the correct slot can bend a contact just enough that the new battery isn't making a full connection. The fob looks closed and looks fine, but it's barely getting power.

If the battery and contacts check out and it still won't work, there's a small chance the fob lost its pairing during the swap, though that's uncommon. At that point it needs to be re-registered to the vehicle with a programmer. Give us a call and we can run through it on site.

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