Reply With QuoteHere's a link to the e32 codes. This has been posted before as to working with e34's too, but I haven't tried them. Let me know if it works.
Big, Big Time Poster
Trick codes?
in anther post, on steering wheel replacement, emw525E34 wrote
'Actually, I would use the "trick codes" of the OBC to show digital speed readout to be doubly sure of the correct speed. Those cops radar guns on friday nights are merciless!......'
does anyone else know about these codes, what is available
1994 540i Auto
live fast; die sideways
13.3 @ 104mph (not in the 540)
15.4 @ 150 Kph in the 540 (24/9/07)
Major Contributor
Here's a link to the e32 codes. This has been posted before as to working with e34's too, but I haven't tried them. Let me know if it works.
1988 M3 - Track rat
1989 325iC
1995 530iM
2000 323iT - UUC BBK, PSS9 Coilovers
2005 GMC HD Crew
Major Contributor
Yes, they work with the e34, too. I unlocked my OBC....but not to change any of the settings...I tend to use TEST #9 the most...which will give you the battery's voltage (when the car is at rest) or the systems voltage (when the car's running).Originally Posted by brodee
It comes in real handy to see if a no-start problem is a low battery. How many times have we read someone complain that there car won't start, and they know its not the battery because the interior light, radio, and horn work. But we all know that this can all be true, yet the battery voltage can be between 10v-11v and not have enough juice to start the car. Well, you can do a TEST #9 and get a reading of your battery.
Q
95 525iT / 97 740iL
2 Grand Master
Good tip!
Ralph Mendoza Jr. - Long Beach, CA
Grand Master
You do have the cheat that unlocks the DME to euro mode and gives you another 35HP don't you?
Bellevue WA
90 535iM - not much stock remains. 3.7 liters, ported head, cammed, 3.73 diffy, M5 brakes, MAFed, yadda yadda yadda
86 Porsche 951 - Track Toy
Major Contributor
naw...I don't have that one...but if you do...pulleezzzee share...I'd love to get a little moe ponies from under the hood!!!
Q
95 525iT / 97 740iL
Big, Big Time Poster
I used Test #7 most. Shows me exactly how much gas I have left. Sometimes the fuel guage is hard to read. The digital display is pretty good and accurate. At least it responds lots faster than the needle upon topup.
Grand Master
Is "unlocking" the OBC likely to make the parked ventillation work??
Gone but NEVER forgotten. :'(
And then...
Let me get this right... it is possible to access a set of hidden functions on my E34 535i OBC, one of which will display my current speed on the LCD screen... efectively working as a digital speedometer? If so, would this also display on the instrument cluster OBC screen? ..or only the display near the heating controls/stereo etc?
I ask this because I have a Momo steering wheel which is great to drive with but blocks out view of the top area of my instruments... making it hard for me to see the 100kmh area unless I slouch down a little to look.
Big, Big Time Poster
does this work on euro cars?
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