epasc

Does anyone else experience this?

When making a call with the iPhone 4 in the S550 the call connects fine, but a few seconds later the audio cuts out and the radio starts playing. The call is still connected, thought. About 10 seconds later the call returns.

The bluetooth disconnects and reconnects like this continuously (with the COMAND displaying "connected" each time) at irregular intervals, rendering the bluetooth speakerphone useless.

Mercedes claims it's an iPhone compatibility problem.

Apple says it's a Mercedes problem and suggests getting a firmware upgrade for the COMAND (mine is the most up-to-date, according to the dealer).

If anyone knows a solution to this, please describe. Thanks.

danodano

What puck do you have? I have a iphone 4 and I dont experience the issues you are mentioning.

Diesel Benz

A 2010 US W221, unlikely has any "puck". There are numerous technical bulletins related to iPhone issues, you should check if there is a solution (coming) from Apple or if MB is going to adapt to their bugs.

chuck57

Haven't had any problems yet with my Ipone4/bluetooth - calls are all very clean, crisp and uninterrupted - maybe consult the dealer?

egauster

My wife has an 09 ML that does this too. It is definately an iPhone 4 compatibility problem with Command...

I will try her phone with my 07 S550 (has a motorola "puck" for bluetooth).

epasc

Correct, no puck.

How would I find these bulletins? I'd love to send them to Apple with a further inquiry.

It's classic and expected that when two companies are involved in a technology that each will blame the other when sonething goes wrong.

RajwanyS550

my iphone4 works perfectly. no problems. have them flash the bluetooth software on the command. u can also try doing a soft reset on ur command. good luck.

epasc

Tried a soft reset. We'll see what happens tomorrow.

epasc

Soft reset did not work. The problem returned today after a brief pause.

looks like I will need to give up my iPhone, unless anyone has any other insights.

rtx2008

I have the same problem with the iPhone 3 and 2010 S400. Interesting that it didn't start until I had the car for over six months.

epasc

rtx,

How many contacts do you have in your phone? I have over 4000 and think that this might have something to do with it, if only because it's one of the few variables among iPhones (and clearly not everyone has the problem).

Anyone else who has or does not have the problem who wishes to share the number of contacts or anything else about your setup would be appreciated.

rtx2008

I don't know how many contacts I have but it's a lot.

chuck57

I've got less than 100 contacts - could be onto something here...

epasc

Interesting.

The reason I thought of contacts is that one of the things mine does when it reconnects is that it immediately begins reloading contacts. Sometimes it gives me an error message about not being able to complete the contact download. Maybe it's crashing or timing out on the download?

Also, when the phone/COMAND is misbehaving like this, the contact list is invariably incomplete - lots of missing names when I try to voice dial.

I'll have to delete my contacts and see what happens.

epasc

I reduced the number of contacts in my iPhone to 792 and the phone worked perfectly on the Bluetooth.

While this is by no means definitive, it supports the idea that contact quantity or something about the contact file is involved with the "bug"

I'll continue to try the phone with reduced number of contacts and see what happens.

If anyone else could chime in with the number of contacts in your iPhone and the success or failure of Bluetooth on 2010+ cars, then maybe I could get an idea of where the threshold of failure is - assuming there's any correlation at all.

Thanks.

rtx2008

I forgot to mention that I have the same problem with my 2004 Lexus LS. Ill have to try reducing. I have so much accidental duplication in contacts from syncing with four different computers, iPad, etc that my contacts have swelled. This will be a task.

rtx2008

Epasc
How do you ascertain the number of contacts?

epasc

Hey rtx,

Go to the contacts app/list in iPhone and scroll to the bottom. It should give the number of contacts after your last entry.

famous550

Wow 792 contacts. I only have about 200 contacts and mine's work fine.. But there is one thing i hate about the bluetooth in the mercedes, If you receive a call with it and hit the speaker button on the phone.. The radio should come back on but that doesn't happen.

epasc

Since I've dropped the contact count to 792 I've had perfect function for several days. So I think they are realated.

Would still like to hear from anyone else who has this problem (or who doesn't) on their 2010 and iPhone, and how many contacts you have in your phone.

Thanks!