Phantom phone

Vulcan69 · 3rd November 2007, 19:34

Any ideas on how to cure this one? Every now and again my Symphony unit cuts out and comes up with the message 'PHONE MUTE'. I can't turn the unit off and the problem doesn't even go away when the engine is turned off. The only way to get the message to go away is by disconnecting the battery for a few seconds. I wouldn't mind but I don't even have a phone in the car (You couldn't pay me to have one of the damned things!) and as far as I can tell it's never had one fitted. All the obvious connections seem to be secure. My neighbours must think I've got a pig of a car because I'm constantly looking under the bonnet with a spanner in my hands.

Greeners · 3rd November 2007, 19:48

First thought would be that there was a phone kit fitted at sometime and was never removed properly.

Pop the unit out and see if there are any wires crimped to the radio loom that have been cut off.

You may find a small black box with lots of wires which is a mute kit.

Greeners · 3rd November 2007, 19:50

http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA:IT&ih=004

This is what they typically look like

Duotone · 3rd November 2007, 21:40

I have a Parrot Bluetooth kit fitted to my Symphony.
It does not come up with a message in the display when a call is made or recieved, only the sound is muted.
It does not work at all without the ignition being switched on.
There are connections in the ISO plugs for a permanent 12v to maintain the radio memory and to enable the radio to work without the ignition on.

I would check your connections to the ISO plugs, for any alterations to the wiring. If these are ok. then it's possible your Symphony is faulty.

Dave T

Departed · 4th November 2007, 10:29

There is a mute line in the 8 way power plug (the one with the big black wire in). Normally this would be empty.

This may have been added by an installer, then cut when the phone system was removed. If this grounds, it will show 'phone mute' and quiet the radio.

If you can't find the pin info anyweher, I can look it up, but not until later.

Vulcan69 · 4th November 2007, 21:42

Cheers guys. I've had the unit out a couple of times but not spotted anything obvious, but then again I am a techno-biff. Very frustrating fault especially as I have to keep disconnecting the battery.....at least it holds its radio code when I do. Just for my information, how long do you reckon it takes without battery power before the unit needs the code inputting?

3rd November 2007, 19:34	#1
Vulcan69 Regular poster Rover 75 Tourer 2.5 SE Join Date: Feb 2007 Location: The frozen North Posts: 77 Thanks: 0 Thanked 0 Times in 0 Posts	Phantom phone Any ideas on how to cure this one? Every now and again my Symphony unit cuts out and comes up with the message 'PHONE MUTE'. I can't turn the unit off and the problem doesn't even go away when the engine is turned off. The only way to get the message to go away is by disconnecting the battery for a few seconds. I wouldn't mind but I don't even have a phone in the car (You couldn't pay me to have one of the damned things!) and as far as I can tell it's never had one fitted. All the obvious connections seem to be secure. My neighbours must think I've got a pig of a car because I'm constantly looking under the bonnet with a spanner in my hands.

3rd November 2007, 19:48	#2
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	First thought would be that there was a phone kit fitted at sometime and was never removed properly. Pop the unit out and see if there are any wires crimped to the radio loom that have been cut off. You may find a small black box with lots of wires which is a mute kit. __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

3rd November 2007, 19:50	#3
Greeners Moderator MG-ZTT Join Date: Mar 2007 Location: Ware, Herts Posts: 19,798 Thanks: 161 Thanked 1,249 Times in 1,036 Posts	http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA:IT&ih=004 This is what they typically look like __________________ *David* Impecunity is the mother of ingenuity Useful how to's for common problems Car Of The Month Jan 2014 [SatNav Power Down] [Coolant Level] [SatNav Repair] [Diesel Non Starting] [Paint Codes] [Rear Light Seals] [Reversing Light Switch] [Bleeding Brakes][Sunroof Drain] [Early ZT's][Instrument Pack Diagnostics][ATC Diagnostics]

3rd November 2007, 21:40	#4
Duotone This is my second home 75 Join Date: Nov 2006 Location: Leeds Posts: 8,432 Thanks: 176 Thanked 907 Times in 716 Posts	Phone mute I have a Parrot Bluetooth kit fitted to my Symphony. It does not come up with a message in the display when a call is made or recieved, only the sound is muted. It does not work at all without the ignition being switched on. There are connections in the ISO plugs for a permanent 12v to maintain the radio memory and to enable the radio to work without the ignition on. I would check your connections to the ISO plugs, for any alterations to the wiring. If these are ok. then it's possible your Symphony is faulty. Dave T Last edited by Duotone; 4th November 2007 at 07:09..

4th November 2007, 10:29	#5
Departed Retired -- Join Date: Jan 2007 Location: -- Posts: 3,785 Thanks: 0 Thanked 4 Times in 4 Posts	There is a mute line in the 8 way power plug (the one with the big black wire in). Normally this would be empty. This may have been added by an installer, then cut when the phone system was removed. If this grounds, it will show 'phone mute' and quiet the radio. If you can't find the pin info anyweher, I can look it up, but not until later.

4th November 2007, 21:42	#6
Vulcan69 Regular poster Rover 75 Tourer 2.5 SE Join Date: Feb 2007 Location: The frozen North Posts: 77 Thanks: 0 Thanked 0 Times in 0 Posts	Cheers guys. I've had the unit out a couple of times but not spotted anything obvious, but then again I am a techno-biff. Very frustrating fault especially as I have to keep disconnecting the battery.....at least it holds its radio code when I do. Just for my information, how long do you reckon it takes without battery power before the unit needs the code inputting?