The main unit fitted in a Mercedes W221 / S500 has a number of faults which can make driving this car a real headache. It will not switch on, it resets repeatedly, freezes on the logo and finally goes to a black screen and stops working altogether. At OEMatic we deal with such faults every day. In a moment you will find out why your NTG3 freezes on the logo or resets on startup.
Is my faulty navigation unit an NTG3?
The navigation unit is located at the front of the car, in the dashboard. This is where you insert the CD / DVD. Depending on the version, you may have a single-disc drive or a changer.
For identification, you can use the catalogue numbers or simply compare it with the photo below.
Part numbers
Another way to confirm that your unit is the Comand NTG3 described here is to compare Becker catalogue numbers:
- 7007 HU DVD W221
- 7008 HU DVD W221
- 7009 DC W221 ECE
- 7010 DC W221 USA
- 7011 DC W221 ECE
- 7012 DC W221 USA
- 7013 DC W221 CE
- 7068 China W221
- 7069 DC C216 ECE
- 7070 DC C216 USA
- 7071 DC C216 ECE
- 7072 DC C216 USA
Additional details about the navigation unit:
- fitted in the S-Class W221 and CL W216
- it has an external display forming part of the interior and a controller for moving through the menu
- it does not have a built-in radio and amplifier module – this is handled by the Logic7 module (located in the boot)
- maps are stored on the hard drive
Cause of the fault
The reasons why NTG3 freezes may be as follows:
- software fault (a problem with the device’s so-called firmware)
- hardware fault (e.g. faults in the memory storing the software, short circuits caused by an electrical fault)
Repair of software faults in Comand NTG3
This service involves not only eliminating the problem but also checking whether the memory in which the software is stored is working properly. We have to be sure it will work correctly in the future because you will of course receive a warranty for it. In addition, the repaired unit does not require any special coding to the car. It is "plug and play" – so you fit it and enjoy the sound again.
Repair of hardware faults in Comand NTG3
Hardware faults are most often caused by charging with a "booster", "jump-starting with leads" or other electrical shorts in the system. The result is a logo on the display or repeated resets on startup. Repair involves finding the faulty component, as well as the cause – so the situation does not repeat itself in the future.
By having OEMatic repair it, you gain:
- Free assessment and quote
- Confidence in an effective repair
- Full navigation function test after repair
- Short turnaround time and express shipping
- 12 months’ warranty on the service performed
- You do not replace the unit = you save money
