Replacement 'proper' key

Gareth Rowbotham

Dedicated Member
British Zeds
Joined
Aug 1, 2020
Messages
58
Location
Yorkshire
Model of Z
S50 Z3 M Roadster
My S50 Z3M is still in the garage but in the meantime I thought I'd pop into the local BMW dealer and ask about getting another key.

When I bought the car, it only came with one key - the spare! So no remote operation, and I'm assuming no setting alarm/immobiliser - just works the central locking and starts the car.

However, at the BMW dealer, they say part number 51218374065 is no longer available - its been discontinued as some of the parts for the remote can no longer be made by the supplier. (All BMW can offer is a Universal key 51218205443 for £35 + VAT)

Anyone had any experience of this? Can you get a third party key coded to the car? Anyone recommend someone in the Sheffield area?

Apologies if this is covered elsewhere in another thread (I searched the forum but no luck)...
 

colb

Zorg Guru (IV)
British Zeds
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Nov 25, 2012
Messages
1,306
Location
Newport, South Wales,UK
Model of Z
Z3 M43 1.8 (1999) and Z4 E85 2.5 (2003)
It appears that you need a 433MHz key for your car with the central locking printed circuit board in the fob part of the key and the correct type of blade. My Z3 has a tombstone shaped key fob where the Z4 has a Diamond shaped fob and a different blade than the Z3.
You can buy blanks on ebay but then you have to find someone to cut the key and then programme it to the EWS module in the car to allow it to start the car. The central locking function is operated by the circuit board in the key fob and is easy to sync to the car. The ebay keys are cheap but getting them coded to the car to allow it to start can be a pain if you get the required software and coding machine to do it yourself. Been through this with my Z4 key and ended up getting a mobile locksmith to code the key I had cut, cost me £130. The added complication is that the EWS module has to be removed from the car and its pogramme read on a key coding machine in order to programme a new key.
There are members on here who can do this and will have reccomendations for people who offer key coding service maybe near you, no doubt they will be along shortly to advise further.
 

Robert Hill

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Sep 17, 2018
Messages
283
Bmw can get me a key but I will have to sell my kidney to pay for it so I was lucky enough to find a company in Edinburgh and are willing to travel to Alloa where I live and cut and code new key for £150 HE WILL HAVE TO REMOVE EWS so hopefully I'll have a spare
 

Robert Hill

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Joined
Sep 17, 2018
Messages
283
Update on spare key the company that coded my spare key is keyz from Edinburgh because of the travel restrictions I collected the transponder from them and the spare key I installed transponder I now have two spare keys that work perfectly by the way the circuit board and chip for my z3 is the same used on the range rover
 

Gareth Rowbotham

Dedicated Member
British Zeds
Joined
Aug 1, 2020
Messages
58
Location
Yorkshire
Model of Z
S50 Z3 M Roadster
Update on spare key the company that coded my spare key is keyz from Edinburgh because of the travel restrictions I collected the transponder from them and the spare key I installed transponder I now have two spare keys that work perfectly by the way the circuit board and chip for my z3 is the same used on the range rover
Thanks - gonna look up Keyz from Edinburgh.....!
 

Robert Hill

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Sep 17, 2018
Messages
283
If you remove transponder and send to them keyz will return it with new key two minutes removes transponder
 

Gareth Rowbotham

Dedicated Member
British Zeds
Joined
Aug 1, 2020
Messages
58
Location
Yorkshire
Model of Z
S50 Z3 M Roadster
If you remove transponder and send to them keyz will return it with new key two minutes removes transponder
I don't have the original key with transponder - just the spare. So I was hoping after lockdown, they could come to the car and read it from the car....

We shall see. Could be a while waiting...
 

Robert Hill

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Sep 17, 2018
Messages
283
To code a key on z3 you need a transponder the transponder is under the cover above the pedals it's a white box held in place with two 10mm bolts easy to remove if you have a blank key it can be coded to the transponder
Then get it cut or send them your key a blank key and transponder the circuit board and chip that's in the key is the same used by range rover hope this helps
 

Robert Hill

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Sep 17, 2018
Messages
283
There is no way keyz will travel to Yorkshire there inundated with work and don't have to travel to far to get work at present there on a 7 day week
 

Gareth Rowbotham

Dedicated Member
British Zeds
Joined
Aug 1, 2020
Messages
58
Location
Yorkshire
Model of Z
S50 Z3 M Roadster
There is no way keyz will travel to Yorkshire there inundated with work and don't have to travel to far to get work at present there on a 7 day week
Wow - that's busy! I may look at the other option you suggested then.... Cheers!
 

Robert Hill

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Sep 17, 2018
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283
It's different from my key my key has alarm central locking if it works well done parks BMW wanted £240
 

Althulas

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British Zeds
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Jun 14, 2014
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3,455
Location
North Oxfordshire
Model of Z
M Roadster
Just picked up my new key from BMW today. Cost £60.
It is the exact copy/style
of my original key complete with light and came coded.View attachment 170653 coded
Mines 10/98, I have this key with the EWS fob. I didn’t realise that this style key needed coding as I thought it was the remote that activated the immobiliser and alarm and the later three button key had the gubbins for the alarm remote and immobiliser.

@Gareth Rowbotham did you manage to sort yours out? There are services on eBay https://www.ebay.co.uk/itm/263437439343
 

Gareth Rowbotham

Dedicated Member
British Zeds
Joined
Aug 1, 2020
Messages
58
Location
Yorkshire
Model of Z
S50 Z3 M Roadster
Mines 10/98, I have this key with the EWS fob. I didn’t realise that this style key needed coding as I thought it was the remote that activated the immobiliser and alarm and the later three button key had the gubbins for the alarm remote and immobiliser.

@Gareth Rowbotham did you manage to sort yours out? There are services on eBay https://www.ebay.co.uk/itm/263437439343
Nothing sorted yet - still looking.....
 

ViperKen

Zorg Addict
Joined
Mar 9, 2020
Messages
310
Location
South Shields
Model of Z
1998 1.9
Mines 10/98, I have this key with the EWS fob. I didn’t realise that this style key needed coding as I thought it was the remote that activated the immobiliser and alarm and the later three button key had the gubbins for the alarm remote and immobiliser.

@Gareth Rowbotham did you manage to sort yours out? There are services on eBay https://www.ebay.co.uk/itm/263437439343
I presume that the coding refers to the transponder chip inside the key. The reciept/paperwork that came with the key quotes the EWS version fitted to the car and the BMW coding station.
 

Robert Hill

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Joined
Sep 17, 2018
Messages
283
The transponder is above the foot well just below the steering wheel its held in place with two 10 mm bolts
It communicates with the printed circuit board in the key that also has a chip when the transponder recognises the key it tells the ecu that the car can start plus unlocks the doors and tells the alarm to switch off you need the transponder to code the key to if keys were that easy to get you could steal any z3 by the way the printed circuit in the key plus chip are the same used in range rovers the key has 3 buttons and is not diamond shaped
 
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