Mercedes-Benz CLA C117 coding: hidden features

Comfort indicator flash count

A single short tap makes the indicator flash the number of times you choose, handy when overtaking and changing lanes.

CodingLikely possible

Coming home with low beam

After getting out, the headlights stay on with low beam for a while, so you safely reach your door in the dark.

CodingLikely possibleModules: SAM/CBC (lighting)

Longer blue welcome light in headlamps

The blue welcome light in the LED headlamps stays on longer after unlocking, up to about 25 seconds.

CodingLikely possibleModules: LED headlamp control units, SAM/CBC (lighting)

Daytime running lights – rear lights on

The rear lights come on together with the daytime running lights, so the car is more visible from behind. The setting is discussed beforehand.

CodingLikely possibleBy agreementModules: SAM/CBC (lighting)

Lighting rules: we discuss what is allowed.

We agree the exact setting with you in the workshop.

Ambient lighting retrofit

Ambient lighting in the doors and dashboard is fitted and made adjustable in colour and brightness in Comand or Audio 20.

RetrofitLikely possible

Entry and warning lights in the doors

Lamps at the bottom of the doors light the entry area and warn approaching traffic when a door is open.

RetrofitLikely possible

Enable high-beam assist

High beam switches on and off automatically depending on oncoming traffic and lighting. Requires LED headlights and a front camera.

RetrofitChecked at diagnosisModules: SAM/CBC (lighting)

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Surround lighting in door mirrors

LED lamps under the door mirrors light up the ground next to the car when getting in and out.

RetrofitChecked at diagnosis

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Fog lights retrofit

Original front fog lights are fitted and coded for better visibility in fog and heavy rain.

RetrofitChecked at diagnosis

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Facelift steering wheel retrofit

The newer steering wheel with touch controls is fitted, with airbag and wheel controls coded correctly.

RetrofitLikely possibleModules: SRS (airbag), Steering column module

Cruise control with speed limiter retrofit

An original cruise control with limiter is fitted, so you can relax at a steady speed.

RetrofitLikely possibleModules: Steering column module, Engine control

CarPlay/Android Auto via add-on interface

For head units without factory support, we fit an interface behind the screen so CarPlay and Android Auto appear on the original display.

RetrofitLikely possible

Condition: NTG4.5/4.7 head unit (pre-Mopf) (sibling of listed platform)

Reversing camera retrofit

A reversing camera is fitted and shown on the original screen when reversing, via a suitable interface or genuine kit.

RetrofitLikely possible

Tyre pressure monitoring retrofit

Sensors in the wheels show the pressure of each tyre and warn when pressure drops.

RetrofitChecked at diagnosis

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Blind spot assist retrofit

Radar sensors behind the bumper warn with a symbol in the mirror when a vehicle is in your blind spot.

RetrofitChecked at diagnosis

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Infotainment start-up logo

At start-up the Comand/Audio 20 screen shows a different logo, for example in AMG style. A purely visual change.

CodingLikely possibleModules: HU6 (MBUX head unit)

A visual change only; the car’s model does not change.

Change units (kW/hp, bar/psi, °C)

Power, tyre pressure, temperature and consumption are shown in the units you are used to, for example on an imported car.

CodingLikely possible

Gauge needle sweep at start-up

At start-up the rev counter and speedometer needles sweep fully once, a sporty welcome.

CodingLikely possibleModules: IC (instrument cluster)

Range countdown down to 0 km

The remaining-range display counts down to 0 km instead of stopping earlier, giving a more honest picture. It is a display change only.

CodingChecked at diagnosisModules: Instrument cluster

Display only; the fuel warning stays active. Do not deliberately run the tank empty.

Video in motion

Video and TV images remain visible on the central screen while driving, so the passenger can keep watching.

CodingChecked at diagnosisModules: HU6 (MBUX head unit)

For the passenger only.

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Activate AUX input

An AUX input is added for an external audio source, such as an older MP3 player or an add-on module.

RetrofitLikely possibleModules: HU (Audio 20 / Comand Online)

Condition: NTG4.5 era (pre-Mopf) per sources

Apple CarPlay and Android Auto activation

On cars with a suitable NTG5 head unit the smartphone integration is enabled so navigation, music and messages from your phone appear on the original screen.

ActivationChecked at diagnosis

Condition: Mopf (2016+) NTG5.1 only

DAB+ digital radio retrofit

The radio gains DAB+ for clear digital reception and more stations, fully operated through the original system.

RetrofitChecked at diagnosisModules: HU (Audio 20 / Comand Online)

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

AMG menu in the instrument cluster

The cluster gets the AMG pages with engine and temperature data and lap times, useful for spirited driving.

CodingLikely possibleModules: HU6 (MBUX head unit)

Exhaust flap control via steering buttons

On AMG models with exhaust flaps you can control the exhaust sound via the AMG steering wheel buttons, or set the flaps to a fixed position.

CodingChecked at diagnosis

Keep noise rules on public roads in mind.

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Remember drive mode or choose default

The car starts in the last used drive mode or in a fixed chosen mode, instead of always in Comfort.

CodingChecked at diagnosis

Condition: By analogy with other platforms (no platform-specific source); confirm on diagnosis

Start-stop – remember last setting

The car remembers whether you switched start-stop off on the previous drive, so you no longer need to press the button at every start.

CodingLikely possibleBy agreementModules: CPC (powertrain control), EZS (electronic ignition lock)

Safety or assistance function: the final setting is agreed in the workshop.

We agree the exact setting with you in the workshop.

Open fuel cap warning

The instrument cluster warns you when the fuel cap is not closed properly after refuelling.

CodingLikely possibleModules: SAM/CBC, IC (instrument cluster)

Acoustic lock confirmation

The car gives a short sound signal when unlocking and locking, so you also hear that the car is locked.

CodingChecked at diagnosis

Parking sensors – tones and warning

Pitch and volume of the parking sensors are adjusted and a tone already sounds in the yellow zone, so you are warned earlier.

CodingLikely possibleModules: PTS (Parktronic)

Alarm – perimeter and parking damage detection

The factory alarm gets perimeter monitoring and parking damage notification, if the hardware is present.

CodingLikely possible

Air recirculation without time limit

Recirculation no longer switches back to fresh air after a few minutes, handy in traffic jams or with bad smells outside.

CodingLikely possibleModules: Climate control unit

Mirrors fold on lock

The door mirrors fold in automatically when you lock the car and out again when unlocking.

RetrofitLikely possible

Seatbelt reminder – adjust

The seatbelt reminder behaviour for front or rear seats can be adjusted, for example when carrying luggage on the passenger seat. The exact setting is agreed together.

CodingLikely possibleBy agreement

Safety function: we discuss the setting in the workshop.

We agree the exact setting with you in the workshop.