I need help want to activate my MB star SD C5/C4 Mercedes xentry scanner with 2021.103 version of the software.
Have tried to update the mux but saying battery too low.
MB SD C5 Star Diagnosis Tool
Your MB Star C5/C4 host needs to install a new battery before proceeding with the firmware upgrade. Please buy new battery: 6 units Ni-MH Rechargeable batteries, Size: AA, Voltage: 1.2V.
Please follow this article on how to install battery for C5/C4:
Here is the detailed instruction help to install MB SD C4/C5 batteries.
1. Please prepare the following tools:
install-mb-sd-c4/C5-batteries-1
①— SD connect multiplexer which need to input the batteries。
②— 6 units Ni-MH Rechargeable batteries，Size：AA， Voltage：1.2V， Capacity：above 1700mA。
③— 1 unit 108M WIFI Card。
④— Plum screwdriver，Specification：T-20
2.Take out the rubber:
2.1 Use the T20 Plum screwdriver to take out the screws as below.
2.2 Take out the rubber as below.
①— Batteries Space.
②— WIFI Card Space.
③— SD Card Space.
3. Insert the Rechargeable batteries.
3.1 Use the T20 Plum screwdriver to take out the screws of Batteries Space fixation as below.
3.2 Take out the fixation of Batteries Space. Pay attention to the Battery polarity marked in the Batteries Space.
3.3 Insert the batteries. Note the Battery polarity.
3.4 Button on the Fixation of Batteries Space after inputting the Rechargeable batteries.
3.5 Use the T20 Plum screwdriver to fix the screws of Batteries Space fixation as below. Inserting the batteries is finished.
4. Installing WIFI Card.
4.1 Inserting the WIFI Card into the WIFI Card Space. Please make the correct direction.
4.2 Push it to make it totally connected.
4.3 Cover the rubber and fix the screws to finish all the work.
That’s all about how to install MB SD Connect C4 diagnosis