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.
Cut to code, programmed at your address. Typical job 45–90 min.
Spare key serviceNo working key needed. Old keys wiped from the immobiliser so a found key can't restart your car.
Lost-key serviceHow 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.
Get An Instant Auto Locksmith Quote
Enter your reg & postcode. Tick any extras — we'll send a tailored quote via WhatsApp in minutes.
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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.