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Solution found! (archive)
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Posted by Kevin Curran on December 04, 2000 at 09:14:19:

In Reply to: Could be hardware... posted by 3literX5 on December 02, 2000 at 19:48:25:

I took the X5 to BMW service this morning. The problem was identified and fixed in 45 minutes while I read the morning paper. It appears that certain memory locations in the X5 pertaining to the built-in CPT 7000 telephone were erased or otherwise set to values that indicated that no phone was in the vehicle. The service department reset these values using their BMW service computer and all is well, for now. When I asked how this occurred I was told that it may have happened due to "using the phone too fast". Humm.... I would say the BMW/phone software should be more completely tested and debugged and/or redesigned so that ordinary operation of the telephone will not crash the system. Having years of experience with realtime embedded software systems, I smell a design flaw. This software isn't ready for prime time if simply working through typical situations as outlined in the owners manual causes a system crash.

Has anyone else had this problem?

********

I plug/unplug my phone all the time whether its powered up or not. I'm often carrying it on my belt & just plug it in (a CDMA for Cellular One, now AT&T).

Since your system does not see the phone at all any more, I would suspect a hard failure--something as simple as a connector came loose on the phone interface box in the left rear quarter panel.

If I try my steering wheel phone button without the phone installed, it does see the phone components, because the dashboard asks me if the phone is installed. Yours isn't even seeing the permanently installed parts of the phone stuff.
LOL.

I have taken delivery on 11/28/2000 of a new X5 4.4 with a BMW CPT 7000 TDMA digital phone (AT&T digital one rate plan). The phone worked correctly for four days both as a portable and as an in-vehicle "hands free" installation. Today, I took the time to step through phone's owner manual. When I was operating the phone through the On-Board Monitor (also used for the nav system) the phone system became non-operative. Initially the "telephone" function became "greyed" out on the OBM. I was unable to use the phone in any manner while installed in the ejector box. When I removed the Star-Tac phone from the ejector box, it worked fine. When I placed the Star-Tac (while powered on) into the ejector box, the handheld display immediately stated "Powering off" and then promptly did so. When I removed the Star-Tac from the ejector box the phone was then able to resume normal operation. Hoping for a time-out counter or "soft reset", I left the car for ten minutes. Now the "telephone" function doesn't even appear in the OBM and the Star-Tac stays powered on (but completely inoperative as a "hands free" phone) when plugged in. I strongly suspect a software bug in the X5. Does anyone know how to reset the on-board software so I don't have to waste time at the dealer on Monday?





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