- Model years
- 2023–
- Make-wide fault codes
- 5,180
CarCoding is available for iPhone, Android and Windows and works with an ELM327 OBD2 adapter. For Smart #3 vehicles from 2023–, the app has no coding data, so no ECU coding settings changes are provided for this vehicle. You can still use CarCoding to read and clear fault codes and view live data on Smart #3.
On Smart #3, CarCoding reads and clears fault codes and shows live data through an ELM327 OBD2 adapter. CarCoding includes 5180 manufacturer fault code descriptions for Smart #3. ECU coding settings changes are not listed because coding data is none for this vehicle.
Supported coding modules
No coding modules are defined for this vehicle in CarCoding. Fault code read/clear and live data work over OBD2.
Fault codes for this make
There are 5,180 manufacturer fault code descriptions for Mercedes-Benz · Smart. Open a code block and read what your code means.
Frequently asked questions
What does CarCoding do on the Smart #3?
CarCoding reads and clears fault codes and shows live data over OBD2 on the Smart #3 (2023–). No coding modules are defined for this vehicle.
Can I read fault codes on the Smart #3?
Yes. Besides standard OBD2 engine codes there are 5,180 manufacturer fault code descriptions for this make group; you can read and clear them.
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?
- Plug an ELM327-compatible OBD2 adapter into the car.
- Open CarCoding and connect to the adapter over Bluetooth.
- Pick the make and model — or let the VIN identify it.
- Read fault codes; on supported vehicles, open the module settings.
Related pages
Get CarCoding
Connect your ELM327 adapter, read fault codes, and browse module settings on supported vehicles.
The app is free to download.