- Model years
- 2020–
- Engine options
- 5
- Coding modules
- 23
- Make-wide fault codes
- 20,644
CarCoding supports ECU coding and fault code reading on the Seat Leon IV (KL) from 2020 onward. It runs on iPhone, Android, and Windows with an ELM327 OBD2 adapter. The app covers 23 coding modules and 20644 manufacturer fault code descriptions; the available setting list is resolved at runtime from the unit's part number (ODX).
On the Seat Leon IV (KL), CarCoding can change settings such as Partial networking deactivated, Soft start, Motor regulation, Country variant, Acoustic Feedback if Stored, Steering Side, Vehicle Without Passenger SSG, Reproach: Terminal X Deactivation, Automatic Radio Key Memory Mode, and P Button Memory. The setting list is resolved at runtime from the unit's part number (ODX).
Supported coding modules
On Volkswagen Group cars the setting list is resolved from the car: CarCoding reads the unit's part number and fetches the matching ODX bit map at runtime. The list you see is the one your unit actually carries.
Body and comfort
- SEAT MEMORY 36208 settingsComfort, Display, Lighting, Performance, Safety, multimedia
- CLIMATE 08153 settingsComfort, Lighting, Performance, Safety, climate, configuration
- PARKING HEATER 1843 settingsPerformance, climate
- CENTRAL ELECTRONICS 0919 settingsComfort, Lighting
- DECK LID 6D6 settingsComfort
- ACCESS START B72 settingsComfort, Lighting
Instrument cluster
Infotainment
- TELEMATICS 7554 settingsDisplay, Lighting, Performance, Safety, configuration, multimedia
- INFOTAINMENT 5F25 settingsComfort, Display, Lighting, configuration
- AUDIO STRUCTURE SOUND A91 settingDisplay
Safety and driver assistance
- ADAS ACC 1390 settingsComfort, Display, Lighting, Performance, Safety, configuration, multimedia
- DRIVER ASSIST A556 settingsComfort, Lighting, Safety, configuration, multimedia
- CAMERA 6C38 settingsconfiguration
- PARKING ASSIST 1019 settingsDisplay, Performance, Safety
- ANTITHEFT LOCK 326 settingsComfort, Lighting, Performance, configuration
- BLIND SPOT 3C1 settingconfiguration
- BRAKES 031 settingDisplay
Powertrain
Gateway
Other modules
Engine options
- 1.0 TSI 110HP
- 1.5 TSI 150HP
- 2.0 TSI 190HP
- Cupra 2.0 TSI 300HP
- 2.0 TDI 150HP
Fault codes for this make
There are 20,644 manufacturer fault code descriptions for Volkswagen · Seat · Skoda · Cupra. Open a code block and read what your code means.
Frequently asked questions
Which app can do ECU coding on the Seat Leon IV (KL)?
CarCoding does ECU coding on the Seat Leon IV (KL) (2020–) from your phone: the setting list is resolved at runtime from your unit's part number; example settings: Partial networking deactivated, Soft start, Motor regulation, Country variant, Acoustic Feedback if Stored, Steering Side. 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.
Can I read fault codes on the Seat Leon IV (KL)?
Yes. Besides standard OBD2 engine codes there are 20,644 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.