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E85 / E86 Z4 (2003-2008)
E85 Z4 Roadster, E86 Z4 Coupe, E85 Z4 M Roadster, and E86 Z4 M Coupe talk with our BMW gurus here.

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  #1  
Old 07-12-2015, 05:47 AM
Bill G. Bill G. is offline
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Location: Corning NY
 
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Mein Auto: 2003 Z4
Cruise control

Will a tire warning light keep the cruise control from working? Also, there are no tire sensors on the car. They were gone when I bought it. How do I clear the tire warning light without them?
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  #2  
Old 07-12-2015, 05:53 AM
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bwitherel bwitherel is offline
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Location: South Carolina
 
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Mein Auto: 2006 Z4 3.0si
Stealership can clear the codes (expect to pay $60 - $130). Or some owners have the diagnostic tool and clear the code themselves - I have not pulled the trigger on that cause I haven't had the need and I have no experience on how to clear the codes.

Missing tire sensors would not cause cruise control to not work. Good luck with it!!
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Old 07-12-2015, 06:45 AM
kalali kalali is offline
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Mein Auto: 2003 Z4 2.5
Press and hold the button with a picture of a tire in the lower center console, right next to the top buttons (if you have automatic top). That should reset the warning light. As far as I know, that has nothing to do with the cruise control. 2003 model year Z4 does not have tire pressure monitoring system. The loss of pressure in a tire is detected by the antilock brake system comparing the difference between the diameter of the tire with low air with the rest of the tires as they rotate.
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Old 07-12-2015, 10:30 AM
Bill G. Bill G. is offline
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Thanks I'll give it a try and see if maybe it's just a bad cruise control module
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  #5  
Old 07-12-2015, 01:00 PM
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enzed4 enzed4 is offline
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Mein Auto: E85 2008 2.5_Si
I have a complete set of TPMS sensors that are no good to me (turns out I don't have this system in my Z4). I will part with them for the cost of shipping (around $20-$25US). These are around $75 each at ECS.
I'm not sure they're for the pre-facelift model though, you'd need to do some part number checking. I remember DC Wright mentioning that some Z4's use the TPMS sensors in the wheels matched to a sensor in the wheel wells, others use a difference in the rolling diameter of the tyre to detect a loss of pressure.
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Old 07-12-2015, 02:15 PM
Bill G. Bill G. is offline
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Location: Corning NY
 
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No change

No change tire light won't go away. No cruise. Cruise light doesn't come on at all DSC light doesn't come on either. Fuses ? Will need to download a fuse schedule.
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Old 07-12-2015, 04:14 PM
jcutrell jcutrell is offline
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Location: Georgetown, Ohio (USA)
 
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Mein Auto: 2003 BMW Z4
There is no cruise light on a Z4.
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  #8  
Old 07-12-2015, 05:37 PM
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dc_wright dc_wright is offline
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Mein Auto: '06 Z4 3.0si, '11 128CiC
Did you check the tire pressure to make certain you don't have a tire that's low? Did you just press the button or did you press the button and drive the car in a straight line for a bit? With the older style low tire pressure system it doesn't just reset instantly. Below are the instructions for initializing.

Initializing the system
The initialization is completed while you
are driving, and can be interrupted at any
time. Initialization is continued automatically
when you continue driving.
When driving with snow chains, do not initialize
the system.<
1. Start the engine immediately before pulling
away, but do not drive off yet.
2. Press the button until the yellow indicator
lamp in the instrument cluster lights up for a
few seconds.
3. Drive off.
Initialization is completed during the drive,
without any feedback issued.
__________________
2006 Z4 3.0si Sport Package (But I'll still hang with my "homies" in the E36 forum)
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  #9  
Old 07-12-2015, 06:56 PM
Bill G. Bill G. is offline
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Location: Corning NY
 
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Mein Auto: 2003 Z4
Thanks for the info. The tire light never goes away. I have held the butto while driving to no avail. I will check to see what sensors it had stock. Has anyone had to replace a cruise controller ?
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  #10  
Old 07-13-2015, 05:09 AM
kalali kalali is offline
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I suggest getting an Owners Manual in the meantime.
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  #11  
Old 07-13-2015, 08:08 AM
Bill G. Bill G. is offline
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Location: Corning NY
 
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Mein Auto: 2003 Z4
Yup I have an owners manual but it is no help. I may end up taking it in and see if the stealership can get that tire warning light out. I am going to keep trying on the cruise control. Downloaded the fuse diagram today and will check it when I get home.
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