434mhz must be tray to coding remote on ac or contact
Adding a spare key to BMW 1 series 2004 and the new key(purchased from 3D) starts the car but no remote. I feel like I'm missing something obvious. Original key remote still functions fine. Any clues?
Checked key frequency with keydiy KD900 - looks a bit all over the place but reads something near 868mhz some of the time. Viewing on SDR functioning as spectrometer shows a signal on 434mhz and 868mhz.
434mhz must be tray to coding remote on ac or contact
Professional bmw key service cas 3/3+ 4/4+ repair = reset ews egs 8hp = 6hp-egs19d
truedetective (5th January, 2017)
Hi Doctore thanks for your reply.
BMW Multi Tool reads out frequency as 868mhz.
Key coded on car battery - codes in fine and starts car.
Are you saying I should try using a 434mhz key?
in cas it should work when coding key bat see real mhz maybi remot in key not good, witch remote send both frequency old or new
Last edited by doctore; 6th January, 2017 at 12:02 AM.
Professional bmw key service cas 3/3+ 4/4+ repair = reset ews egs 8hp = 6hp-egs19d
Faulty key?
Maybe worth opening it up
I am a FUD
Key is a CAS dash remote not EWS key.
Try another remote. Had one from 3d the other week with faulty remote part.
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truedetective (6th January, 2017)
Was putting out a signal, but not working on car. Programmed another remote from different source and was fine. Not got round to sending it back yet to be honest, your post reminded me I need to do so!
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truedetective (6th January, 2017)
I wasn't suggesting there was an issue with all their bmw remotes, just that faulty ones do exist and is the most likely reason for your problem.
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obdsystems (11th January, 2017)
This is the smart key right and not diamond on that make/model
so only ever seen 868
But sometimes 3D do cock up - open key up & check - the ones i have you can move a resistor to change frequency.
I am a FUD
truedetective (11th January, 2017)
Correct it is the smart key. OK I've had a little look the frequence resistor is set to 433/868 on the other side of the board there is J1 and J2 which are labelled 868mhz - these are unpopulated should these have resistors here? Don't suppose you have a photo of a good board?
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