Question 1

How long does a Subaru dealer typically take for a key replacement on a 2007 WRX?

Accepted Answer

It depends heavily on whether they have the blank in stock. On a vehicle this age, some dealers keep the blanks on hand and can cut and program the same day, sometimes in under an hour once a tech is available. More often, especially at lower-volume dealers, they need to verify the key specification by VIN before ordering, and then you're waiting for the part to arrive before you can even schedule the programming appointment.

For all-keys-lost situations, the timeline gets longer regardless of the dealer because they need ownership documentation verified before they'll touch the security system. That paperwork step alone can add a day.

We come to you in the Fallbrook and Bonsall area, do the whole job on site, and don't need you to schedule around parts shipping. For most transponder key jobs on this generation WRX, we're done and gone in under an hour.

Question 2

What exactly is a transponder key and why does my 2007 WRX need one?

Accepted Answer

The key blade starts the mechanical side, turning the ignition cylinder like any key would. But inside the plastic head there's a small chip that does a second job. When you turn the key, the immobilizer system reads that chip. If the signal matches what the vehicle has on file, the engine is allowed to start. If it doesn't match, or if there's no chip at all, the car cranks but won't fire.

That means a key cut perfectly to your locks but not programmed to your specific vehicle is useless for starting. Hardware store copies look right, fit the lock, and do absolutely nothing at the ignition. The programming step is what ties a new key to your car, and that requires the right equipment connecting to the OBD port.

No remote functions, no buttons. The 2007 WRX transponder key is just the key. The chip is the whole security story.

Question 3

Why does the dealer take so long on Subaru transponder key jobs compared to a mobile locksmith?

Accepted Answer

Three real bottlenecks.

First, parts availability. Dealers work from their own inventory or a regional warehouse. If the blank for your specific vehicle isn't sitting on a shelf, it gets ordered, and you wait.

Second, scheduling. Even after the part arrives, you're booking time with a service advisor and then waiting for a tech bay to open. That's not a key problem, it's a throughput problem. The key job itself might take 20 minutes. Getting that 20-minute slot can take three days.

Third, documentation. Dealers are careful about key replacement for liability reasons, and on all-keys-lost jobs especially, the ownership verification process has its own timeline.

A mobile locksmith cuts all of that out. I bring the equipment and the blank to your driveway in Bonsall or wherever you're parked in Fallbrook, verify ownership on site, and do the whole job there. No appointment queue, no parts wait, no second trip.

Question 4

My 2007 WRX starts fine most of the time but occasionally cranks without starting. Could that be a key or transponder issue?

Accepted Answer

Yes, and it's one of the more common patterns on these. Intermittent no-start where the engine cranks normally but won't fire is a classic sign of an inconsistent transponder read. The immobilizer sees a questionable signal, won't authorize the start, and the car just cranks.

A few things cause this on the 2007 WRX specifically. A cracked key head is the most common. The plastic cracks near the key ring hole, the chip shifts slightly inside, and the read becomes unreliable. Heat makes it worse because the housing flexes. You might get clean starts all winter and then hit a string of no-starts in summer.

A worn ignition cylinder can also put the chip too far from the antenna ring, which degrades the signal. And if the key has been on a heavy keychain for years, both problems can develop at once.

Before chasing fuel or ignition components, look closely at the key head for cracks. If there's any flex or play where the head meets the blade, that's your answer.

Question 5

Can I get a spare key made for my 2007 WRX without going to a dealer?

Accepted Answer

Absolutely. This generation WRX is one of the easier transponder vehicles to work with outside of a dealership. A qualified automotive locksmith with the right programming equipment can cut a new key to your vehicle and program the transponder on site. No dealer visit needed, no parts order to wait on.

Getting a spare made before you need one is the smarter move. All-keys-lost situations take more time and cost more than adding a second key while you still have a working one in hand.

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