Ducati Monster 797 Key Replacement

Quick answerThe air-cooled Monster 797 comes with two keys, and both carry the immobilizer code. There is no red key and no Code Card on this model. The key starts the engine and opens the fuel tank plug and the seat lock. Because the bike only ever had two keys, a 797 bought used with one key has no backup, and that is the best moment to have a second one made.

Ducati Monster 797 key quick facts

The 2019 Monster 797 owner's manual says the motorcycle comes with 2 keys that contain the immobilizer system code.
The manual lists the key's uses as starting the engine, opening the fuel tank plug and opening the seat lock.
The immobilizer is read by an antenna integrated in the ignition switch, and the red warning light on the dash doubles as the over-rev and immobilizer light.
The manual includes sections on key duplication and on restoring operation via the PIN code.
The fuel tank plug can only be closed with the key inserted.

Ducati Monster 797 key types by year

Years	Models	Key type	Chip	Notes
2017-2020	Monster 797, Monster 797+	two transponder keys	yes	Two keys, no Code Card. Immobilizer, key duplication and PIN code sections in the 2019 owner's manual.

A first Ducati with a grown-up immobilizer

The 797 was sold as the entry point to the Monster range, and many are a rider's first Ducati. The key looks ordinary, which leads people to assume a hardware-store copy will do. It will not. The manual explains that an electronic device in the grip of each key answers a signal from the antenna in the ignition switch, and that the signal works as a password that changes at every start. A copy without a programmed chip turns the switch and lights the dash, and the engine stays blocked.

The manual's advice on daily use is specific: separate the two keys and ride with only one. It also says to use the same key throughout a start attempt, since swapping keys mid-procedure can stop the system from acknowledging the code.

Need a key for your Monster 797?

Call or text with the year and where the bike is parked.

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Tank plug and seat lock

Both of the 797's other locks have their own quirks, described in the manual.

Tank filler plug: lift the flap, insert the key and turn it a quarter turn clockwise; the plug only closes with the key in it
Seat lock: turn the key clockwise while pressing down on the seat at the latch to help release the pin, then slide the seat back off its front retainers
Ignition switch with steering lock

Small problems worth catching early

Since the tank plug will not close without the key, a damaged or bent key can leave you at the pump with the cap open. If a key has taken a hit, test it in the tank and seat at home, not on a ride. The manual also warns that strong impacts can damage the electronic components inside the key, so a key that has been dropped hard and now works intermittently is telling you something.

The seat release needs a push on the seat while the key turns. People who skip that step often think the lock has failed and twist harder. If it will not release with a firm press and a normal turn, stop before the key bends.

Replacing 797 keys

For a spare, Ducati's manual tells owners to bring every key they still have, because keys are programmed together and missing ones are erased. So a new key can be made alongside your remaining key, and the lost key will no longer start the bike.

If both keys are gone, Ducati's dealer bulletin for its two-key bikes calls for a new switch kit and instrument panel supplied with new keys. Ask us first. Give us the year and VIN, and we will tell you whether new keys can be programmed to your bike's existing electronics at the roadside or driveway, and what it would involve. You will need photo ID and the registration or title in your name.

Where to find the key code

The Monster 797 has no Code Card. Its fallback is a PIN code that the owner stores in the dash; the manual has a procedure for restoring operation with it. If you bought the bike used, ask the seller whether a PIN was ever set.

What to have ready

Have this ready when you call or text

Year, make and model of the bike
Where the bike is parked
Whether you have any working key, a broken key or a key code
Photo ID and registration or title (we verify ownership before making a key)

Ducati Monster 797 key FAQ

How many keys does a Monster 797 come with?

Two. The owner's manual says the motorcycle comes with 2 keys, both containing the immobilizer code. There is no separate master key.

Why will my 797 gas cap not close?

The manual notes the plug can only be closed with the key inserted. Put the key in, press the plug into place, turn the key back and remove it. If it still will not latch, the lock needs attention.

Is the Monster 797 key the same as the Monster 821 key?

Both are two-key immobilizer bikes without a Code Card, but keys are programmed to each individual bike, so a key from one will not start another. Blanks and chips also need to be right for the model, which we confirm from the VIN.

Why does a red light flash on my 797 dash after I switch off?

That is normal. The manual shows the red over-rev light doubling as the immobilizer light: it flashes after key-off to show the engine block is active, and goes out once the bike has been off for more than 12 hours.

The immobilizer system on this bike

Ducati Immobilizer: Red Key, Code Card, PIN and Lost KeysEvery keyed Ducati immobilizer reads a transponder in the key and only lets the engine start when the code matches one stored on the bike.

More Ducati models

Services for this bike

Adding a Spare Motorcycle Chip Key: Who Can Program It?First check that your bike has a chip at all: many Japanese motorcycles sold in the US use a plain key, and a spare for those is simply cut.
Motorcycle Gas Cap, Seat or Steering Lock Stuck? What to DoStuck gas cap, seat and steering locks on motorcycles usually come down to grime or corrosion in an exposed cylinder, a worn key, a stretched seat cable, or parts under tension that hold the latch closed.
Motorcycle Key Turns but the Bike Won't Start: Key or Not?Watch the immobilizer or key light in the first seconds after you switch on.
Lost Givi, SHAD or Kappa Top Case Key: Your Real OptionsNeither Givi nor SHAD will cut you a key once every key is lost.

Where we come to you

Sources

Page last updated November 14, 2026.