3) New Audio 20 (NTG 2.5) and Ipod
- 1st This is valid for European SLK only, US have different connections.
Done on 3/2009.
I ordered a cable set from http://www.kabeldaviko.de/r171-w211-adapterset_ntg.html
Here are some pics of the audio 20:
This unit costs new around €600, from MB Dealer.
But as some people are upgrading to the Comand NTG 2.5 there are, from time to time, some nice barely used units on ebay like this one.
In ebay they are selling from €200 to €300, mine was €280.
My A25 is A1718704294 as you can see in the picture. It’s not the last model. But there are at least 4 different part numbers for it since it came out… Probably SW revisions. And CD Changer option.
About the microphones I already have a UHI phone in this car so it is possible to use the same microphones.
The CDC in the glove compartment, forget it... the new audio 20 CODE 523 does not have optical connectivity MOST (the 510 does), so the old CDC is gone. (now I have a glove compartment).
The part numbers: (there are new part numbers)
- CODE 523 is A 171 870 42 94 (MB Audio 20)
- CODE 510 is A 171 870 43 94 (MB Audio 20 with CD Changer)
Now I had to clarify one thing... what kind of ipod kit must I buy? And were is it less expensive?
The ipod kit does not use the MOST connection:
"The Mercedes Benz iPod kit is a sort of kludge that connects to the Auxiliary input of the stereo system (for sound) and uses the car's network (Canbus) to display information on the instrument cluster and read the steering wheel controls, as oppose to other audio devices like phone and CD changer that connect to the audio fibre-optic network called MOST.
There are various iPod kits for the different models but basically they contain the same basic parts.
Each kit consists of an iPod control unit, a cable from the iPod control unit to the iPod, a power and audio cable, a manual and some mounting hardware."
My ipod Kit came from www.comandonline.co.uk
Also bought the ipod cradle from MB dealer.
Now you have everything needed:
- A171 870 42 94 - Audio 20 HU without cd changer (optionally A171 870 43 94 Audio 20 HU with cd changer)
- B6 782 45 01 - ipod cradle
- B6 782 45 02 - ipod kit (SLK-R171 MY2009 facelift)
- NTG 2.5 cable kit (NTG 1 to NTG 2.5 converter + bluetooth antenna + microphone adapter + antenna adapter)
The iPod kit contains contains the flowing items:
B6 782 45 29 - iPod-Interface
B6 782 45 30 - iPod Amplifier NTG2.5
B6 782 45 31 - Wiring Harness iPod (connection to ipod)
B6 782 45 06 - Wiring Harness iPod (connection to HU)
B6 782 45 07 - Owner's Manual iPod Interface Kit
B6 782 45 08 - Operator's Manual iPod integration Kit
and some pieces of Velcro and felt.
The iPod Kit
The NTG 1 to NTG 2.5 converter
About the microphones: The cable supplied by Frank does not attach to the mic connector so I very carefully opened the connectors and took the contacts out, and swapped the contacts to the existing connector as follow:
The green goes to the (2 on 1) blue wires and the black is just shield it does not connect. the other two red wires go to the brown and white.
And by the way, you don't need to take the central light off...
I faced a antenna problem, the HU have 2 antenna connectors, but only one is working and the cable supplied by Frank is he wrong way around. It is a known problem and by the help of fellow Adamantium it was solved: "You can't connect the aerial double fakra (white) the wrong way round. You need to open up the fakra connector and move the aerial wire to the other side. ie. to the side with the connector release tab on it."
Is it going to work on my 2004 R171?
Yes, but it needs some adapters as the pinout is different, the antenna connector is different, you need also to connect to the Head Unit a Bluetooth antenna and the microphones.
Is my UHI Phone Cradle going to Work (option 386)?
Well as I learned so far, it still charges the phone and the phone connects via Bluetooth… so you can say it works as you have the same functions as before.
Is the Bluetooth going to work?
Yes!!! And it is perfect!
Is my 6 cd changer going to Work? Is mp3 available on de CDC?
Nope, there is no MOST (optical connector) so it is virtually impossible to connect it. There is a New audio 20 with CD Changer integrated in the HU.
Are there any more cables needed?
The cables needed are the following: NTG 1 to NTG 2.5 adaptor, antenna adaptor, Bluetooth antenna, microphone extension cable. (if you don´t have microphones you need to get 2). And the iPod kit for the NTG 2.5.
Is it going to be ipod compatible?
Testing, as far as I tested it works perfectly when the key is turned on, whiteout the key turned a strange thing aspens, the iPod starts to go mad between play and pause and no sound comes out. If you turn the car on everything is OK and works fine.
Is the color of the dashboard exactly the same?
Yes a perfect match.
Ok, now I'm going to change to Command!!!
Yes it is true, I love the audio 20, but I "need" navigation, and a good opportunity came around...
I'm posting some pictures as I go along.
I'll be selling my audio 20 soon.
4) Upgrade for the SLK 350 4 pot Brembo Brakes
Upgrading Brakes on 200 Kompressor