Skip to main content
BMW 1 Series specialist ///

BMW 1 Series Key Replacement & Programming from £220

2011–present • CAS4 / FEM-BDC smart key • Mobile service across London & the South East. Spare keys from £220, all-keys-lost from £380.

Spare key
£220 – £320

Cut to code, programmed at your address. Typical job 45–90 min.

Spare key service
Lost key / all keys lost
£380 – £550

No working key needed. Old keys wiped from the immobiliser so a found key can't restart your car.

Lost-key service
12-month warranty on parts and programming • 24/7 callout

How BMW 1 Series key programming works

Your BMW 1 Series uses the CAS4 / FEM-BDC smart key immobiliser system. F-chassis 1 Series uses CAS4 or FEM-BDC. Spare key cut + programmed at vehicle in 60–90 min; all-keys-lost requires module read on the bench.

Common BMW 1 Series key & lock issues

  • FEM-BDC waking issue (battery drain)
  • Comfort access aerial faults
  • Key fob battery drain after 2–3 years

Confirm your exact key type

Enter your registration — we'll confirm the immobiliser type and quote you on the spot.

Instant Tailored Quote

Get An Instant Auto Locksmith Quote

Enter your reg & postcode. Tick any extras — we'll send a tailored quote via WhatsApp in minutes.

Which service do you need?

Bundle & save — add related services

0/600

Fixed price confirmed before we attend · No-damage entry · Dealer-grade key programming

No spam · No obligation · Fixed pricing confirmed before we attend

Services for your BMW 1 Series

Where we cover for BMW keys

BMW 1 Series — FAQs

How much is a spare key for a BMW 1 Series?+

£220–£320 cut and programmed at your address. We bring everything to you — no main-dealer trip.

I've lost all keys to my BMW 1 Series. What now?+

All-keys-lost on a BMW 1 Series starts at £380. F-chassis 1 Series uses CAS4 or FEM-BDC. Spare key cut + programmed at vehicle in 60–90 min; all-keys-lost requires module read on the bench. Typical turnaround same-day, occasionally next-day on FBS4 / latest MQB jobs that need online unlock.

Can you program a used BMW 1 Series key I bought online?+

Most of the time yes — but check the chip type matches your year/chassis. We'll confirm from your reg before quoting. Used FBS4 Mercedes and MQB AES keys need component-protection unlock, which we handle online.

Do you come to my home / work?+

Yes — fully mobile across London and the South East. We cover Harrow, Slough, Heathrow, Uxbridge, Windsor and the surrounding areas.

Other BMW models we cover

Other makes we cover

Call — 30 min avgWhatsApp