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Mercedes SDConnect C4 relay board pcb. Relay pcb board Star Diagnosis C4.

Relay Board pcb Mercedes Star Diagnosis C4.

Condition: new.

The appearance of such defects multiplexer SDConnect C4 as:

  • the multiplexer does not detect of the individual blocks of the car
  • error self-diagnostics (selftest) multiplexer UART Test 8
  • error to charge the internal batteries (selftest — PMPic 8)
  • the absence of any reaction when power is applied

problem solved by replacing the relay Board multiplexer.

The procedure for replacing the Board is simple and does not need any special equipment and skills to repair microprocessor devices.

Relay boards “Type 1” and “Type 2” are interchangeably.

Mercedes SDConnect C4 relay board Type 1 (250 $ / 220 €):

 

Mercedes SDConnect C4 relay board Type 2 (265 $ / 230 €):