2015 Toyota Sienna Key Replacement in Los Angeles, CA

2015 Toyota Sienna: key facts

Key type: Transponder chip key
Push-to-start: No
Transponder chip: Varies by trim — we confirm by VIN
Programming: OBD
All keys lost: We can originate new keys on site

Documented split year: vendor guidance (UHS and CLK Supplies listings) warns the 2015 Sienna can carry either the 80-bit G chip or the 128-bit H chip — we machine-identify the chip before cutting.

What kind of key does a 2015 Sienna use?

The 2015 Sienna uses a transponder key. The plastic head holds a small chip that talks to the van, and the metal blade has to be cut correctly for the ignition. This year has no push-to-start, so you are dealing with a traditional key turned in the ignition cylinder.

Two things follow for the owner. First, a plain hardware-store copy may slide into the lock, but it has no chip the van recognizes, so it will not start the engine. Second, programming on this year is done through the OBD port. That means we can usually do the work where the van is parked, from our mobile service vans, instead of having it towed. It also does not require NASTF secure data registry access.

Wear is the other thing to know about. On high-mileage Siennas, the ignition wafers can wear out, and a worn key blade can stop turning the lock. Sometimes the key is the problem, sometimes the ignition is, and we look at both before telling you what to replace.

Key type: transponder, turned in the ignition
Push-to-start: no
Programming: through the OBD port
A mechanical backup key exists for this setup, so the blade itself still matters

Which chip is in your Sienna? We confirm before cutting

Here is the part we will not gloss over. The data we have on this year is marked conflicting. Vendor guidance from UHS and CLK Supplies warns that a 2015 Sienna can carry either the 80-bit G chip or the 128-bit H chip. We have not verified a single chip family that applies to every van of this year, and we will not pretend we have.

So we do not guess from the model year alone. We machine-identify the chip in your existing key, or in the van if you have no key, before we cut or program anything. We confirm by VIN and in person. Buying a key online for a 2015 Sienna based only on year and model is how people end up holding a key that cannot be programmed to their van.

Duplicate key or all keys lost?

For this setup, a duplicate needs an original working key. With one in hand, the job is simpler: we identify the chip, cut a matching blade, and program the new key to the van through the OBD port. If your only key is badly worn, bring it anyway. We can often tell whether the blade or the ignition is the weak link.

If you have lost every key, replacement is still possible on a 2015 Sienna. Without an original to copy, we work from the vehicle itself, then cut and program a new key. It involves more steps than a duplicate, which is why it usually costs more. It is also worth getting done before the last key is gone, because the lighter-cost path is almost always the duplicate.

Call (213) 577-1366 and tell us the year, model, and whether you have a working key.
Choose mobile service where the van is parked, or come to our storefront at 10740 Wilshire Blvd in Westwood.
Have your VIN and proof of ownership ready.
We identify the chip and confirm it against the VIN.
We cut the blade and program the key through the OBD port.
We test the key in the ignition and the door, and check any other keys you already have.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

What affects the price of a 2015 Sienna key?

We do not post numbers on a page like this, because the real cost depends on your situation. Here is what moves it:

Duplicate versus all keys lost: a duplicate from a working key is usually the more economical route.
The chip type found in your van, since we identify it first and the key we need follows from that.
How many keys you need cut and programmed in one visit.
The condition of the ignition: if the wafers are worn, a new key may not fix the problem on its own.
Where and when you need us: our storefront, or a mobile van to your location, daytime or overnight.

Why call Wilshire Lock & Key for this van

We have been in business since 1987, with a storefront at 10740 Wilshire Blvd, Los Angeles, CA 90024 and mobile vans that serve 140 cities across Los Angeles and Ventura counties. You deal with one company, not a dispatch middleman, and David, the owner and lead technician, oversees the work. Phones are answered 24 hours a day, 7 days a week.

California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it before they start. For more on this model, see our Toyota Sienna key page, the wider Toyota key replacement guide, or contact us with your VIN.

Frequently asked questions

Does a 2015 Toyota Sienna have a push-to-start?

No. Our data lists this year as a transponder key used in the ignition, not push-to-start.

Which transponder chip does a 2015 Sienna use?

It depends on the van. Vendor guidance says it can carry either the 80-bit G chip or the 128-bit H chip, and our data for this year is conflicting. We identify the chip by machine and confirm by VIN before cutting.

Will a hardware-store copy start my Sienna?

No. A non-transponder copy may fit the lock, but it has no chip, so the van will not start.

Can you make a key if I lost all of them?

Yes, all-keys-lost is possible on this year. It takes more steps than a duplicate because there is no original key to work from.

Do I need my original key to get a duplicate?

Yes, for this setup a duplicate requires an original working key. If you have none, we treat it as an all-keys-lost job.

How is the new key programmed?

Through the OBD port. For this year it does not require NASTF secure data registry access, and we can usually do it where the van is parked.

My key barely turns the ignition. Is that a key problem?

Possibly either one. Worn key blades and worn ignition wafers on high-mileage Siennas are both documented problems, so we check both before recommending a replacement.

Where can I find more Toyota key information?

See our car key services overview or call (213) 577-1366 and we will answer by phone.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.