#Mercedes w203 radio not working how to#
#Mercedes w203 radio not working code#
#Mercedes w203 radio not working Pc#

This basically returns the radio to a factory вЂnewвЂ™ state that enables connection to your vehicle without the fatal PROD error.

#Mercedes w203 radio not working Pc#

This is carried out by connecting directly to the flash memory chip inside the radio and using a PC programming device erasing and and reloading a blank вЂdefaultвЂ™ dump of the factory code. What replacement options are open to us then ! There are used/repaired radios available that have been re-flashed by Auto Electrical Repair Shops that have car audio workshops.

#Mercedes w203 radio not working how to#

See here for information of how to enable Sound 5 radio options from the front panel without MB STAR and a visit to the dealers! It would have to be activated for youВ (with a ВЈ charge) by the Mercedes agent. If you have a 6 Disc changer or Auxillary audio device that uses the radio audio section, such asВ some types ofВ phone kit, these functions are activated and enabled by the STAR diagnostics unit.В (Also variable volume-with-road-speed option)В So lets say you purchased a 6 disc changer for your basic Sound 5 CD radio and the function of вЂCDCвЂ™ was not already accessible through the user menu, then it will not work.

#Mercedes w203 radio not working code#

So they will sell you a new radio that is delivered with a default вЂblankвЂ™ flash code which is open and accessible,В further activated by the dealer to synchronise with your vehicles central controller via the CAN-BUS. (it is reacting as if you had stolen it from another vehicle!) Now, that wonderful machine that connects to your vehicle electrical system when you take it into a main Mercedes Dealer (The Mercedes-STAR Diagnostic System) is able to syncronise a new radio to your van but cannot recode an existing oneвЂ¦ Great marketingвЂ¦. What this means isВ that there is no longer a match between the radio flash code and that registered in the central vehicle contol system. You connect it, all is wellвЂ¦ then after a few seconds the set ceases to function and displays вЂPRODвЂ™. If your radio breaks or becomes faulty, you buy aВ used replacementВ right? Well you can, but it will not work in your vehicle. It simply talks to the central system, says I am here, the code is recognised and the unit is allowed to function. The radio can be removed from the van and refitted without the traditional recoding once power failiure has occurred. The mystery of the radio is that it contains flash memory that holds a unique code, this code is communicatedВ to the vehicle electrical systems (CAN-BUS)В main processor to give the radio anti-theft security.

The Mercedes Sound 5 (NG) Mobis Version HA1111 The Mobis unit has secondary button function legends above the channel preset numbersВ вЂ“ this is a quick way to identify the models as the early Becker unit does not have these buttonВ markingsВ . The other difference is the later Mobis HA1111 version of the Sound 5 (NG)В plays a range of computer audio file CD formats that the previous Becker unit does not. The Mercedes Sound 5 CD Radio unit exists inВ 2 versions as I am aware, the one made by Becker and the other Mobis (Hyundai) Both radios look similar and have the same controls, connections andВ layout but differ in their internal firmware вЂ“В this controls the radio вЂbehind the scenesвЂ™ вЂ“ to the user, both radios operate in a similar way with a couple of exceptions. There is some mystery surrounding the standard Mercedes Sound 5 CD Radio player found in later model Vito and Sprinter models I hope that this post goes some way to explaining them and my findings prove useful in adapting the unit for connection to an external mp3 player etc.