BMW 1 Series 2004 vs BMW Multi Tool - Remote not working

**truedetective** · 5th January, 2017, 11:11 PM

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.

**doctore** · 5th January, 2017, 11:15 PM

434mhz must be tray to coding remote on ac or contact

**truedetective** · 5th January, 2017, 11:22 PM

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?

**doctore** · 5th January, 2017, 11:37 PM

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

**obdsystems** · 5th January, 2017, 11:44 PM

Faulty key?

Maybe worth opening it up

**truedetective** · 5th January, 2017, 11:47 PM

Key is a CAS dash remote not EWS key.

**Cr4nky** · 6th January, 2017, 07:59 AM

Try another remote. Had one from 3d the other week with faulty remote part.

Sent from my SM-G930F using Tapatalk

**truedetective** · 6th January, 2017, 12:27 PM

Originally Posted by Cr4nky

Try another remote. Had one from 3d the other week with faulty remote part.

Sent from my SM-G930F using Tapatalk

Will do. Any luck getting it replaced by them? Did your one test ok or same symptoms as above?

**Cr4nky** · 6th January, 2017, 06:38 PM

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, 11:54 PM

Originally Posted by Cr4nky

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!

Sent from my SM-G930F using Tapatalk

Got another two on order from them...feeling like that was a bad idea. What was the other source? I have 2 customers hanging on and my other usual supply has none in stock.

**Cr4nky** · 7th January, 2017, 12:43 AM

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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**truedetective** · 7th January, 2017, 01:14 AM

Originally Posted by Cr4nky

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.

Sent from my SM-G930F using Tapatalk

Will report back how I get on either way.

**truedetective** · 11th January, 2017, 04:29 PM

Originally Posted by truedetective

Will report back how I get on either way.

2 more keys from 3D and a second car same results: no remote. Would anyone point me towards a tried and tested source that's compatible with this tool? (Or point out what I'm doing wrong - could well be user error)

**obdsystems** · 11th January, 2017, 08:12 PM

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.

**truedetective** · 11th January, 2017, 08:31 PM

Originally Posted by obdsystems

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.

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?