The 2002–2008 7 Series uses the same key setup, so everything on this page applies to those years too. The full picture is on the BMW 7 Series key guide.

2005 BMW 7 Series: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: ID46 (PCF7945, Hitag2)
Programming: OBD
All keys lost: We can originate new keys on site

First CAS car: fob inserts into the dash slot, Start button standard. Trade sources conflict on when CAS1 gave way to CAS2 within 2002-2008 — the ID46 key family is the same and both are programmable by specialists via OBD/bench; module generation confirmed per VIN. European catalogs list 868 MHz fobs; US-market cars use 315 MHz versions of the same key family.

Same key system as the 2002–2008 7 Series

BMW kept the 7 Series's key system unchanged across 2002–2008, so everything about replacing a 2005 key — blanks, programming, and what happens if every key is lost — matches the rest of that run. The full year-by-year breakdown lives in our BMW 7 Series key guide.

What drives the price is the key type, whether you still have a working key, and where the car is parked. There's more on BMW programming in general on our BMW key page.

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Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.

2005 BMW 7 Series key replacement

2005 BMW 7 Series: key facts

Same key system as the 2002–2008 7 Series

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