Smart ECU Coding App

Vehicles with coding

2

Vehicles in catalogue

9

Manufacturer fault codes

5,180

Coding data can cover example settings such as Dashboard backlight always on, Dashboard language, Trip computer display, Tire pressure monitor system installed, Overspeed warning, Seat belt warning on dashboard, and Pointers staging. Other examples include Gear shift hints, Engine temperature display principle, Fuel low-level lamp switch-on level, Fuel low-level lamp switch-off level, and Daytime LCD screen backlight level.

Examples of codeable settings

• Dashboard backlight always on
• Dashboard language
• Trip computer display
• Tire pressure monitor system installed
• Overspeed warning
• Seat belt warning on dashboard
• Pointers staging
• Gear shift hints
• Engine temperature display principle
• Fuel low-level lamp switch-on level
• Fuel low-level lamp switch-off level
• Daytime LCD screen backlight level

Models with coding data

• Forfour (453)2014–2024
• Fortwo (453)2014–2024

Smart — all supported models →

Frequently asked questions

Which app does ECU coding on Smart vehicles?

CarCoding does ECU coding on Smart vehicles from your phone; coding data exists for 2 vehicles. An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone, Android and Windows and is free to download.

Which Smart models can be coded?

Some of the models with coding data: Forfour (453) (2014–2024), Fortwo (453) (2014–2024). The full list is on this page.

Which adapter do I need?

An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone, Android and Windows and is free to download.

How do I start?

1. Plug an ELM327-compatible OBD2 adapter into the car.
2. Open CarCoding and connect to the adapter over Bluetooth.
3. Pick the make and model — or let the VIN identify it.
4. Read fault codes; on supported vehicles, open the module settings.