Fiat 500L Ducato Compatible Key – ID46 434MHz SIP22 Marelli BSI 3 Button
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ID46 PCF7946A 434MHz ASK SIP22 Blade 3 Buttons Marelli BSI Battery Not Included
Aftermarket Fiat compatible car key with ID46 PCF7946A chip, 434MHz ASK (Marelli BSI) frequency, 3 buttons and SIP22 blade. Suits Fiat 500L (2012 onwards) and Fiat Ducato (2008–2020). Battery not included. Diagnostic programming by a qualified locksmith or mechanic is required.
🔋 Battery Not Included: This key does not come with a battery. Please purchase a compatible coin battery separately before use. Battery access requires a tool.
ℹ️ Marelli BSI System: This key operates on the Magneti Marelli BSI (Body Systems Interface) protocol used in Fiat vehicles. Your locksmith or mechanic must have diagnostic equipment that supports the Marelli BSI system to program this key correctly.
⚠️ Diagnostic Programming Required: This key must be programmed using a diagnostic scan tool by a qualified automotive locksmith or mechanic with Fiat/Marelli BSI compatible equipment. It cannot be self-programmed.
Key Features
Complete Key
Full key with all electronics inside — not a shell or casing only
434MHz ASK
434MHz ASK Marelli BSI frequency matching Fiat factory specification
ID46 PCF7946A
ID46 PCF7946A transponder chip for immobiliser system compatibility
SIP22 Blade
SIP22 key blade — confirm your current blade matches before ordering
3 Buttons
3-button layout — lock, unlock and boot release
500L & Ducato
Suits Fiat 500L and Fiat Ducato — passenger and commercial van
Vehicle Compatibility
| Vehicle | Year Range | Chip | Frequency | Blade |
|---|---|---|---|---|
| Fiat 500L | 2012 – Current | ID46 PCF7946A | 434MHz ASK | SIP22 |
| Fiat Ducato | 2008 – 2020 | ID46 PCF7946A | 434MHz ASK | SIP22 |
Programming Requirements
🔧 Diagnostic Programming Only — This Fiat key uses the ID46 PCF7946A chip with the Magneti Marelli BSI protocol. Programming requires a diagnostic scan tool that is compatible with Fiat's Marelli BSI system, operated by a qualified automotive locksmith or mechanic. Manual programming is not supported. Please confirm your locksmith has the correct Fiat-compatible diagnostic equipment before purchasing.
Technical Specifications
| Manufacturer Compatibility | Fiat (Aftermarket) |
| Type | Aftermarket Compatible Key |
| Chip | ID46 PCF7946A |
| Frequency | 434MHz ASK (Marelli BSI) |
| Buttons | 3 |
| Blade | SIP22 |
| BSI System | Magneti Marelli BSI |
| Programming Method | Diagnostic Only (Marelli BSI compatible tool required) |
| Battery Included | No — purchase separately |
| Battery Access | Tool Required |
| XHorse Compatible | No |
Before You Buy – Important Information
- This is a complete key with all electronics included — not a shell only
- Keys are not supplied with logos
- Battery is NOT included — please purchase a compatible coin battery separately
- This key is suitable if your current key looks identical to this listing and uses a SIP22 blade
- Your locksmith must have Marelli BSI compatible diagnostic equipment to program this key
- Programming must be performed diagnostically by a qualified automotive locksmith or mechanic
- This key cannot be self-programmed
Disclaimer: This product is an aftermarket compatible replacement key, distributed as a substitute for the original manufacturer's product. It is not produced by, authorised, endorsed, or approved by Fiat or Stellantis. The words "Fiat", "500L" and "Ducato" are used solely to indicate vehicle compatibility.