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|Z3 / Z4 /ZM BMW Z3 Forum & BMW Z4 Forum - Covers all the past and present Z3/Z4 vehicles including: BMW Z4 Coupe 3.0si, BMW Z4 Roadster 3.0i, Z4 Roadster 3.0si, and the ZM Coupe and Roadster (BMW Z4 Forum, BMW Z3 Forum, BMW ZM Forum)|
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I am a new owner of a 2006 Z4 3.0i auto. Black with tan and black top. What a beautiful car and a blast to drive. I got a good deal on it from a private owner as I believed the car was in transport mode and no air or rear defrost (no light displayed on the dash either when pushing the buttons). Car has 70k and needs a little TLC.
Here is my problem.. I ordered my BMTechnics program and got it out of transport mode and the air and everything worked. I thought I had it made but a day later the radio started shutting off sometimes very frequently and the dash lights when in the first position started flickering, and now don't work, and the air bag light came on. Dome lights coming off and on also. Went into the program and deleted all the faults but it did nothing. Radio only shuts off maybe every half hr now which is better but have to shut off manually. This only happened after I deleted transport mode as all was fine with everything else for a good week of driving.
Now last night the door locks and the fab stopped working, and radio wheel controls. So I am getting worried whats next.
It has a new battery and shows 12.55 volts, and the specs look same as OEM. Talked to BMTechnics about registering the battery and they said there is none for my 2006 and is not needed. There is no place in the program to do it also. They did not give me the SSS program as one of the programs do the same (think its advanced section).
Can I unhook the battery and start over and maybe the computer will reset, is there a special way to do this so it don't go back into transport mode?
Is there anyone here that can help me with this computer program as it is somewhat complicated. I need detail information please. I am hooking it up again this weekend. Seams like the faults don't stay deleted or I am doing something wrong. I have done this maybe 4 or 5 times sometimes shows no faults but still got problems.
I love the car and looks great but I live 200 miles from a dealer and no time to drive it there and rather do it myself.
Things I have done to it so far..New expansion chamber (leaking) and motor is good except still missing a dip stick which scares the heck out of me. Fixed foggy head light, good cleaning and 2 coats of wax. The car has new run flats which suck as they thump a little at about 80 mph.
I only paid 10,500 dollars for the car so I got some room for problems and the guy really needed money. Car fax was clean and dealer said new water pump at 45k and brakes also. They said looks like a good car.
Hope someone can help my..Thank You in advance
| Brad: I have an BMW E soft wear. That will work on this car and may be some help as to mechanical resets. But that really does not help here. I think as I recall that that car has three total ECUs and two that are linked,The Air bag ECU system is on it's it's own. So all of this does not quite make perfect sense to me Such,as in the Air bag light on. Now the rest is possible as the two linked ECU's do control all of the rest we are talking about here,again than the Air Bag System light on, I would say you are 100% correct if the changes in the program do nothing to reset when he has advanced. What he says about the transport mode in my understanding is correct. The system would do just as he says but then I am not 100% up to date on his system. BMW made a huge change in the ECU system in the 2004 and up cars. Now the computer can be reset by removing the negative terminal for five minutes or more, but I think it puts the car back in transport mode. I am thinking it is the ignition switch. This could and would control all the things we are talking about here. The ignition switch powers up everything and would power down everything we are talking about here. |
It does sound like there is voltage drops somewhere in the system. The battery is not the only connection; many branches and splices, each being a potential problem. Steve's shot at an ignition switch is a good one, probably one of the easier places to start.
I can see this car potentially taking some serious investigative volt meter and scanner work. To be blunt, the very first thing I would be looking for is signs of being in a flood.
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