Please read all directions before beginning.
Prepare the Car:
The car must be put into programming mode first
Make sure the car is warm and everything is stable
Make sure the car battery is fully charged
Turn off accessories and unplug any SD or USB devices
Don’t change any settings or press any buttons while programming
The car must be in IGNITION position 2 (all cluster leds are ON but the motor is OFF)
Be Patient in this process, wait a minimum of 60 seconds until the audio head has totally booted up.
Begin Installation:
– switch IGNITION ON (2 click clockwise) or 2 presses of Start/Stop button and make sure you see all cluster LEDS are ON
– wait till your audio head unit totally booted (60 seconds)
– plug module to the OBD2 (diagnostic socket) under the dash and observe the blinking green light on one side of the module
– wait 1-3 minutes before the light stop totally blinking
– installation is finished, unplug the module, ignition off.
You may get an error message in the service screen, for example “Mercedes Connect inoperable” or “Lights are Defective, consult workshop”. You may note the clock has reset to 12:00. Turn the car off, wait a minute, turn it back on, the messages will clear.
Important: Do not leave the module on the OBD connector. Use the module only when you want to switch between Stage1(2) and factory maps.
In addition to the module you will find an SD card on which the factory map is recorded. The SD card from Stage1(2) is already installed in the module. In order to install the Stock map, replace the SD cards and repeat the installation process. Below are instructions on how to disassemble the module:
– open the box with the knife. Do not put the knife more than 2-3mm. Open OBD tune box from the long side not to damage electronics)
– remove the microSD card (just pull it out)
– plug the second microSD card to the socket
– then repeat all actions you did the first time when downloading the Stage1(2) file.
Joshua Adams –
Very satisfied with the purchase. The support team was responsive and made everything simple.