My 99 XJR,s stereo is stuck in phone mode and is draining the batter any one know how to resolve this problem...also any one have fuse box locations for where what fuse goes to what

 

Fuse charts can be found here:

https://www.jaguarforums.com/forum/s...ad.php?t=29800

Never heard of the issue you describe. May I suggest that you try a hard boot of all systems by removing the negative cable from the battery and touching it to the positive cable. That will drain all capacitive voltage from the car and cause a complete reboot of all systems.

 

Sounds like the mute line from the telephone-tranceiver connector, inside the console, to the head unit might be shorting to ground somewhere along its path... else the head unit has a failure. The connector is stuffed into the rear of the console, between the console liner and the rear AC controls; sometimes underneath the rubber padding. The mute pin could be inadvertently contacting a grounding point, like a screw. This would be the first place to look...then measure the voltage at that pin. If it's at ground, the wire is grounding out somewhere, or the head unit is at fault.

It's connector RT2 - a ten pin connector, pin 3; color is blue with yellow stripe, in your year, I believe.

If you never plan on adding a bluetooth phone adapter, then you can cut this blue/yellow stripe wire close to the head unit, to eliminate any possible short to ground along the wire's path.

 

I posted images of what QuadManiac is speaking about in this thread, Post #7.

https://www.jaguarforums.com/forum/s....php?t=11547#7

 

thanks checked the wiring harness in center console all seems well there, haven't made the plunge to pull the head unit yet due to all the crap thats gotta come off...just pulled the fuse for now.

 

Thanks, SS... I knew I'd seen that somewhere, just couldn't find it.

 

Did you measure the voltage on pin 3? If it's close to zero, that verify's the problem.

 

Hello,
Did your problem with the radio being stuck in 'PHONe' get fixed?

Got my 1999 XJ8 Sovereign yesterday. Absolutely wonderful, really a thing of beauty.

Problem with Radio: Battery had been flat because car was parked up so charged battery up and started car. Radio display was dead. Checked fuse and it was blown so replaced it. Entered radio security code and display now states: “PHONE”. Tried all of the buttons on the radio but nothing operates. Aerial does go up if I press AM/FM.

Tried pulling out phone fuses nr 5 and nr 10 in the left hand heel board fuse box but this did not stop ‘PHONE’ message.

Any ideas?

Simon

 

have anybody got answer how to get this radio got stuck on phone mode fix i have the same problem on my 2001 xj8l yesterday came on and its killing battery overnight

 

I too am having this problem after battery went flat from sitting. I have checked all connections reset several times (after charging battery) , sometimes it will come out of phone mode momentarily then go back in. Has anyone who had this problem come up with a definitive answer?


Much appreciated.


2003 XKR Alpine premium audio.

 

I had this problem and solved it by replacing the head unit with a used one. No more phone mode problems (yet).

 

Thanks, I appreciate the reply, I was hoping that wasn't the case but had that feeling. I knew someone had to have resolved it. I pulled the steering wheel switch off today and thought the phone button was stuck, it wasn't working smoothly so I fixed it but still get the phone message. it worked momentarily prior to looking at switch, but instantly went to phone mode when I hit the volume control on the steering wheel.


Thanks again for response, save me wasting anymore time.

 

Hi, my battery went flat for a while, and now when I turn the radio on It says PHONE on the display, it will not come out of this, any ideas what could cause this? thanks

 

hi, did you end up fixing the PHONE error on the radio? if so can you tell me how. thanks

 

which fuse did you pull to turn the radio off, I've tried numerous but its still illuminated?