gregb1221

I synced up my HTC one X via the bluetooth, it says it is authorized and available, but when i try to make a call it says no telephone inserted...Need help.

carboxy

You need a puck. I suggest look on ebay

gregb1221

Excuse my ignorance, what is a puck?

xxGenericSNxx

Do you have something that looks like this in the armrest?
http://www.ebay.com/itm/Mercedes-MHI...365190&vxp=mtr

carboxy

generic is right.. look at pic. if you have it then you need a mb puck to connect w bluetooth.. ask away..

marthyh

You would need a UHI (pse search forum) and could use a Viseoo 'puck' or an original one.

https://mbworld.org/forums/new-s-cla...ooth-help.html

gregb1221

I'm checking or ebay now...does anyone know the MB part number....

gregb1221

There are several on ebay but this looks like the correct one. Part Number B6 787 6131 is the black one with MB emblem. Can anyone verify this will work for 2007 S550.

xxGenericSNxx

I have one of those silver ones on my R-Class and it came out of my friend's 07 S550. I think the black ones are newer models. To be honest, if I'm given the choice between the silver and black, provided they have the same functionality, I'd go with silver because I think it looks so much cooler.

gregb1221

Do they work with all smartphones, I have an android HTC one X. I had heard that MB only worked with specific phones

walt2810

Have the exact unit that dealer installed when 07 was delivered. Works on the iPhones.

NickCats

Make sure you get part # B6 787 5878

I picked one up on ebay for $160

Nick

xxGenericSNxx

If you look hard enough you'll find the 5878 (silver style) for closer to $100 on eBay.

JonMBZ

6-7-87-6131 and 6-7-87-5878 both work, the black one is newer smaller.

NuMBS500er

07 s550 have 2.1 bluetooth tech., it will syn with iPhone 4, but will not syn with iPhone 4s or 5 they use 4.0 bluetooth tech. Later year S550 that do not require puck will syn with later model iPhones.

xxGenericSNxx

I have the 5878 puck (same as for the 07 S Class) in my R Class and it works fine with my iPhone 5. Remember, Bluetooth 4.0 is backwards compatible with older BT spec.

NuMBS500er

Latest update, finally got the BT sync with my iPhone 5.

s550148

I just got the iphone 5, the older bluetooth device in my 07 worked with my iphone 4 and doesn't work with the 5. If I get the newer puck will it work?

s550148

How did you get it to work?

NuMBS500er

I have the latest puck 6131 (black), you have to clear the lists of devices on the car command center and also clear the lists on the phone first, then re-synch. The device that you pick is MB System. Good luck.

s550148

yeah I have the older puck blue and silver, wonder if I get that black one if it will work?

ULJets

The older (2007) puck WILL work with iPhone 5. I just upgraded from iPhone 4 to 5 and at first it didn't work either. What you need to do is reset the puck, I did this by holding down the Mercedes emblem on the puck itself. Then look under the cover towards the back of the puck, you will find a code. Enter that code when prompted and use the same code when synching your iPhone 5. Works perfectly after doing that.

NuMBS500er

That's what I had to do too. Except the newer black puck use the universal MB code.

s550148

Just had them do it over at the dealership, they got it to work

bking

The factory installed cradle on the 2007 S550, and presumably others as well, requires the Motorola phone with MB internal electronics and Verizon as the service provider. This same model Motorola phone is available from Verizon but without the MB internal electronics and will not work with the MB factory installed cradle. For all other phones and service providers, MB offers a blue tooth dongle available from MB dealers. As a general matter, the factory phone in the factory installed cradle is reportedly more reliable and less susceptible to dropped calls and fade outs.