Question 1

What is the cheapest way to handle all-keys-lost on my 2008 Honda FIT?

Accepted Answer

Call a mobile locksmith before you call a tow truck or the dealer. All-keys-lost on the 2008 FIT means the new key has to be cut to your vehicle and the immobilizer has to be reset so it recognizes a fresh key, since there's no working key to use as a reference. Dealers typically charge for the fob, the programming labor, and if the car is immobile, you're also looking at a tow on top of that. A mobile locksmith comes to the car, does the cut and programming on site, and handles the full job in one visit. If you want to protect yourself going forward, get a second key done in the same session. Programming an additional key while the equipment is already connected costs far less than coming back for a second visit later, and having a spare means you never land in all-keys-lost territory again.

Question 2

Can you wipe lost or stolen keys from my 2008 Honda FIT so they can't be used?

Accepted Answer

Yes. When programming keys on these, the immobilizer can be cleared of all previously enrolled keys and re-registered with only the keys present at that session. Any fob that isn't in hand when we do the job gets erased. It won't start the car, won't operate the locks remotely. If a key was lost or stolen and you're not sure who might have it, this is the right call. Done on site, no dealer trip needed.

Question 3

Does the 2008 Honda FIT key have a hidden emergency blade inside the fob?

Accepted Answer

No, not on this one. The 2008 FIT uses a remote head key, which means the blade is fixed and visible, not concealed inside a smart fob. The key blade is permanently attached to the fob head. There's no slide-out emergency blade to find. The remote head key is a single unit: blade, chip, and remote buttons all in one housing. If the fob body cracks or the blade separates, the whole unit needs attention, but there's no hidden backup blade inside it. The hidden emergency blade setup is found on Honda's smart key fobs from later years, which is a different product entirely.

Question 4

My 2008 FIT starts fine but the lock and unlock buttons on the fob stopped working. Do I need a new key?

Accepted Answer

Not necessarily. On the remote head key, the transponder that talks to the immobilizer and the remote transmitter that operates the locks are separate functions sharing the same housing. If the car starts but the remote buttons are dead, the transponder is fine. The issue is on the remote side only.

First thing to check is the battery. These take a CR1616, which is a specific thin cell. If someone swapped in a thicker battery that looked similar, the contacts can lose proper tension and the remote cuts out even with a "fresh" cell. Swap with the correct CR1616 and check that the battery seats flat.

If the right battery doesn't fix it, the issue is usually the housing. Cracked housings, a shifted internal board, or bent contact points inside the fob will kill the remote signal without touching the transponder at all. A housing replacement and board reseat often brings the remote back without replacing the chip or reprogramming anything. If the transmitter itself has failed, then a new fob and a programming session is the path forward.

Question 5

I bought a replacement fob online for my 2008 Honda FIT. Can I program it myself?

Accepted Answer

The remote portion of a Honda remote head key can sometimes be paired through an onboard procedure, but the transponder chip inside that same fob also has to be enrolled to the immobilizer, and that part requires a programmer connected to the OBD port. If you only complete the remote pairing and skip the transponder enrollment, the fob will operate the locks but the car won't start with it. So even if you find a self-programming sequence for the remote buttons online, you still need professional equipment to finish the job. Save the online fob if you want, but plan on having someone with the right tools come out to complete both sides of the programming in one shot.

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