Mercedes Harman / Kardon Logic 7 – amplifier repair

Harman/Kardon Logic 7 amplifier repair.

Harman / Kardon Logic 7 is a high-class sound system that was installed in Mercedes cars. It can be found in the W221 S-Class from 2005 – 2013 and the W216 CL-Class from 2006 – 2013. Unfortunately, sometimes even high-end devices are not immune to certain problems, which in the case of these devices can take a toll after several years of operation. A common problem affecting this sound system is the failure of the amplifier. The initial interruptions in the speakers can develop over time into complete loss of sound or other persistent car audio problems. A defective part may cause incorrect operation of the Comand NTG3 and NTG 3.5 systems. The repair of these problems at the dealership consists in replacing the defective components with new ones, which can be a large part of the value of the entire vehicle. Thanks to the work of our technicians, it is possible to repair the Harman / Kardon Logic 7 amplifier.

The most common cause of problems with the Harman / Kardon Logic 7 system is a faulty amplifier, which can manifest itself in several ways:

  • no radio stations or radio tuner access
  • automatic volume up with no response to volume down
  • speakers malfunction – crackling, noise and buzzing coming from the speakers
  • no sound at all
  • Comand does not start or stops at the Mercedes logo
  • the amplifier consumes additional current, which may lead to battery discharge


If any of the above problems occur in your car, there may be a problem with the amplifier. To be sure, we can perform diagnostics of the suspicious element. For this we only need an amplifier. You can deliver it to us in person or via a courier company. Its disassembly is not demanding – it was usually mounted above the left rear wheel arch.

We have the appropriate technical facilities to check whether amp is to blame for the problems. After the diagnostics, you will receive a repair quote and after it is carried out, we will send you a functional element by courier.

Repair harman kardon logic 7Are you determined to fix it?

By following this link, you can use our online store through which you can order the repair of your device.
Buy and pay for the service and then send us the broken module. We will take care of the rest, thanks to which in a few days you will have efficient navigation in your car again.





If you are not sure if your amplifier is Logic 7, you can compare it with part numbers of this element.

BE 7021 / BE 9061 A 221 870 17 89 / A2218701789
A 221 870 18 89 / A2218701889
A 221 870 60 89 / A2218706089
A 221 870 67 89 / A2218706789
A 221 870 57 89 / A2218705789
A 221 820 57 89 / A2218205789
A 221 820 60 89 / A2218206089
BE9061 / BE9061 A 221 900 05 02 / A2219000502
A 221 900 43 02 / A2219004302
A 221 900 53 02 / A2219005302
BEM005 / BE M005 A 221 900 81 03 / A2219008103