Aprilia Mana 850 and Mana 850 GT Key Replacement

Quick answerThe Mana 850 has Aprilia's dash-based immobilizer, so its keys carry a transponder and have to be stored in the instrument panel. The bike comes with two, and the panel accepts four. There is a second reason not to run a Mana on a single key: the fuel filler is under the passenger saddle, and the saddle opens with the key. Lose it and you cannot start the bike or fill it.

Aprilia Mana 850 and Mana 850 GT key quick facts

The Mana 850 manual says the vehicle is supplied with two keys, one of them a spare.
The immobilizer is activated automatically when the ignition key is removed and prevents start-up if a stored key is not recognized.
The dash accepts a maximum of four keys at the same time; an Official Aprilia Dealer enables new keys or disables a lost one.
Storing keys erases the previously set codes, so every key to be kept has to be present.
To refuel, the passenger saddle is opened with the key and the tank cap underneath is turned anticlockwise.

Aprilia Mana 850 and Mana 850 GT key types by year

Years	Models	Key type	Chip	Notes
From 2008	Mana 850	transponder key	yes	Two keys supplied, four maximum. The dash menu has CODE CHANGE and CODE RESET entries for the user code.
Later years	Mana 850 GT ABS	transponder key	yes	Half-faired version on the same platform. If the immobilizer faults at key-on, the instrument panel asks for the user code.

An automatic bike with an unusual layout

The Mana is the Aprilia with the automatic transmission and a storage compartment where the fuel tank would normally be. Fuel lives under the seat instead. That layout shapes key problems in ways owners of conventional bikes do not expect.

The manual's refuelling steps start with the saddle: insert the key in the lock, turn it anticlockwise, lift the passenger saddle, then unscrew the tank cap. So the saddle lock is used at every fuel stop. The helmet compartment up front is a separate space, and Aprilia warns never to open it while the bike is moving.

Need a key for your Mana 850?

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

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Immobilizer and user code

Key recognition is handled by the instrument panel. With the key out, the system arms itself. With an unknown key in the switch, the dash comes alive and the engine does not. The panel's settings menu includes entries to change the user code, which first asks for the old code, and to reset it.

Aprilia's instruction for a lost key is to contact a dealer, who disables the missing key and enables the replacement. Because the stored codes are erased and rewritten in that process, a customer wanting new keys is told to arrive with all the keys that should keep working. The menu also has a CODE RESET entry, so keep both keys and a note of the code.

Where Mana owners get stuck

If the saddle will not open, stop before the key twists. A saddle lock can be opened and serviced without damage far more easily when there is not a broken blade inside it.

A saddle lock that will not open, leaving the fuel filler out of reach
A key with a bent blade that still starts the bike but will no longer turn in the saddle lock
A single-key bike bought used, with no record of the user code
A flat battery after storage, which can look like an immobilizer fault

When no key is left

Aprilia's manuals for this generation warn that losing both keys can mean replacing components beyond the locks. A dealer's all-keys-lost repair can therefore include a new instrument panel or lock set before keys are coded. Depending on the year, programming equipment may be able to add keys to the panel already on the bike, and that is what we check first.

Call with the year, the VIN, and whether the bike is the naked Mana or the GT. Have photo ID and the title or registration ready. Let us know the fuel level if you can remember it, since the bike will need to run for testing, and whether the battery has been on a charger.

Where to find the key code

The number that matters on a Mana is the user code held in the dash. If you or a previous owner changed it from the factory setting, it should be written down somewhere other than the bike. Ask the seller for it along with both keys.

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)

Aprilia Mana 850 and Mana 850 GT key FAQ

Where is the gas cap on an Aprilia Mana 850?

Under the passenger saddle. The manual has you open the saddle with the key, then turn the tank cap anticlockwise and remove it.

Can I refuel a Mana without the key?

No. The filler is reached by opening the passenger saddle, and the saddle lock needs the key. That is a good reason to keep a working spare.

How many keys can a Mana 850 have?

The manual says the dash accepts a maximum of four keys at the same time. The bike is delivered with two.

Will a plain cut copy start my Mana?

No. It may open the saddle, but the immobilizer blocks the engine unless the key's transponder has been stored in the instrument panel.

The immobilizer system on this bike

Piaggio Immobilizer: Vespa Master Keys and Lost KeysThe Piaggio immobilizer on Vespa and Piaggio scooters uses one master key, with a red or brown grip, and blue or black keys for daily riding.

More Aprilia models

Services for this bike

Locked Your Keys Under the Motorcycle or Scooter Seat?Keys get locked under the seat because most seats latch shut with a push and need no key to close.
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.
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.
When to Get a Spare Motorcycle Key, and Why NowGet a spare motorcycle key as soon as you are down to one working key.

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Sources

Page last updated November 14, 2026.