BMW 7 Series key replacement

BMW 7 Series keys by year

What key does your 7 Series use? It depends on the generation

Five generations of the 7 Series sit on this page, and the key is not the same animal from one to the next. A 2001 car uses a remote-head key with a transponder chip. A 2005 car uses a fob you push into a slot in the dash. A 2012 car has a push-button-start smart key. A 2019 car has a newer-architecture smart key that we can add to but not recreate from nothing. A 2024 car is, bluntly, a dealer job. Which one you drive decides almost everything: what we can do, what we need from you, and how much work is involved.

The generations covered here are the E38 (this page's data covers 2000–2001), the E65/E66 (2002–2008), the F01/F02 (2009–2015), the G11/G12 (2016–2022) and the G70 (2023–2026). The year-by-year table on this page lists the key type, chip family and programming method for each model year. If you are not sure which chassis you have, the VIN settles it, and we check it before we quote anything. For the bigger picture across the marque, see our BMW key services page.

Below, we go era by era and say what owners of that era actually need. Where our data is unverified or sources disagree, we say so and tell you we confirm the exact setup by VIN instead of guessing.

E38 (2000–2001): what does a 7 Series from the turn of the century need?

The 2000 and 2001 E38 uses BMW's EWS immobilizer and a remote-head key carrying an ID44 (PCF7935) transponder chip. There is no push-button start and no slot fob here. It is a real blade that goes in the ignition, with the remote built into the head. The E38 as a model started in 1995, but the data we work from covers 2000–2001, so if yours is older, call and we will confirm the setup before promising anything.

The blade is the part that needs care. Depending on the build, the key uses either the HU58 four-track profile (earlier cars) or the HU92 two-track profile (later ones). We do not guess from the model year. We confirm the profile from the lock before cutting, because a wrong blade wastes a key blank and your afternoon.

This era is forgiving. You do not need a working key. New keys are originated from the EWS module data on the bench, or ordered pre-cut by VIN, and all-keys-lost is routine specialist work. Many owners of these cars expect a lost key to mean a dealer trip and a tow. On an E38 it does not.

What owners of these cars usually need is one of three things: a spare before the last key disappears, a fresh key because the blade is worn or the shell has cracked, or a fix for a remote that has quit. That last one is worth understanding. The remote runs on a rechargeable battery, and when it dies the buttons stop working even though the chip inside still starts the car. That is a smaller, different job from a replacement key.

E65/E66 (2002–2008): how do the slot fob and CAS system work?

This is BMW's first CAS car, and the key shows it: a fob that you insert into a slot in the dash, with a Start button, built around an ID46 (PCF7945, Hitag2) chip. There is also a mechanical backup key for the doors if the fob will not respond.

Here we have to be straight about something. Trade sources disagree about exactly when CAS1 gave way to CAS2 somewhere between 2002 and 2008. The key family is the same either way, and both module generations can be programmed by specialists through OBD or on the bench. But we do not pretend to know your car's module from the model year alone. We confirm the module generation from the VIN before we start.

Frequency matters too. European parts catalogs list 868 MHz fobs, while US-market cars use 315 MHz versions of the same key family. That is one reason we tell people not to buy a fob for these cars until someone has matched it to the car. An 868 MHz fob from a European listing is an easy mistake to make and an annoying one to unwind.

As with the E38, you do not need a working key, and all-keys-lost is possible. For the owner of a 2005 car, that usually means a spare fob, a replacement for one whose battery and slot contacts are worn out, or a full set after losing everything. Before replacing anything, we check whether the fault is really the key, because several problems on these cars imitate one (more on that below).

F01/F02 (2009–2015): is a CAS4-era smart key a dealer job?

No, but it is not a general-purpose-tool job either. These cars use CAS4 or CAS4+ with an ID49 (PCF7953P, Hitag Pro) smart key, and push-button start is standard. The mechanical backup key is still there for the doors.

Adding a key is possible over OBD with professional tools, and you do not need an existing key to start. All-keys-lost usually means reading the CAS4 module on the bench, which takes longer and needs the right equipment. We do this work. A basic programmer is not enough for it, and that is worth knowing before you hand your car to anyone.

Owners of these cars often call after a 'key not detected' warning appears. That is frequently the coin cell in the fob, not a dead key, and the emergency start position still works, so the car is not stranded. Comfort Access door-handle sensor faults on equipped cars can also be mistaken for key trouble. Where a fob really is gone, expect a replacement that costs more than the older E-series keys did. That is the nature of the hardware, not padding on the bill.

G11/G12 (2016–2022): what can be done without the dealer?

These are the first G-chassis 7 Series cars with BDC2. Their smart key belongs to the N5F-ID21A family with an ID49 (Hitag Pro) chip, a Display Key is optional, and some cars have BMW Digital Key enrollment for a phone or card.

The dividing line is simple. Adding a key is possible for a specialist if you have a working key to start from. All-keys-lost is effectively dealer territory. There is an advertised aftermarket route for all-keys-lost on these cars, but the tool vendor's own documentation warns that it locks the BDC2 against future dealer keys. We do not offer it. If another shop says it can do all-keys-lost on your G11 without a fuss, ask exactly what method it uses and what happens to the module afterwards.

So the most useful thing a G11/G12 owner can do is make a spare while one working key still exists. Once the last key is gone, the route goes through the dealer, and lost-fob replacement on these cars is expensive and usually involves them.

One caveat for 2022 cars. The key part and chip listed for that model year are carried over from earlier G-series listings and were not separately confirmed. Facelifted cars may use a newer fob, so we confirm by VIN before quoting a 2022 car.

G70 (2023–2026): why is the newest 7 Series dealer-only?

The current generation, including the i7, uses the newest BDC architecture with Digital Key Plus as standard. We have found no established aftermarket add-key or all-keys-lost method for it, so we treat it as dealer-only. We would rather say that plainly than take your car and your day and come up empty.

The chip family for this generation is not established in our data, which is why the table marks 2023–2026 as unverified and shows no chip. We are not going to guess at it. If you own one, the exact key hardware is a dealer question.

We can still be useful. A 'key not detected' warning on these cars is often a dead coin cell in the fob, so it is worth ruling that out before assuming you need a new key. Digital Key enrollment problems are also listed among the common issues on this generation, and the dealer is the place to sort those out. If the key is truly lost, the dealer is the route, and we will tell you that on the phone.

Duplicate or all-keys-lost: what does your 7 Series need, and how is it programmed?

A duplicate means adding a key while you still have a working one. All-keys-lost means you have none. On a 7 Series the answer changes by era, and so does the method:

• E38 (2000–2001): no working key needed. All-keys-lost is routine specialist work, with keys originated from the EWS module data on the bench or ordered pre-cut by VIN.
• E65/E66 (2002–2008): no working key needed. Programming is by OBD or on the bench, with the module generation confirmed by VIN.
• F01/F02 (2009–2015): no working key needed. Adding a key is done over OBD with professional tools. All-keys-lost usually means bench-reading the CAS4 module.
• G11/G12 (2016–2022): an original key is needed to add one. All-keys-lost is dealer territory, and 2022 is confirmed by VIN.
• G70 (2023–2026): dealer-only for both adding a key and all-keys-lost.

1. Call (213) 577-1366 and give us the model year and, if you can read it, the VIN.
2. We place the car in its era and tell you straight whether it is our job, needs a working key first, or belongs at the dealer.
3. For cars we can do, we confirm the details before anything is ordered or cut: the blade profile on an E38, the module generation and frequency on an E65/E66, the exact fob on a 2022 G-series car.
4. A mobile van comes to the car, or you bring it to our Westwood storefront. We program over OBD, or read the module on the bench where the car requires it.
5. We test every key before we call it done: starting, locking and unlocking, and the mechanical backup where the car has one.

What affects the cost of a 7 Series key?

We do not publish numbers on a page like this, because an honest figure for a 7 Series depends on facts we only have once we know your car. Here is what moves the cost:

• The era. Smart-key hardware from 2009 onward costs more than an E38's remote-head key, and lost-fob replacement is costlier than it was on the E-series cars.
• Spare versus all-keys-lost. With a working key in hand, the job is shorter. Reading a CAS4 module on the bench is extra work and extra equipment time.
• Blade cutting. On an E38, confirming HU58 versus HU92 from the lock comes first, then the cut.
• The right part. Matching a 315 MHz US-market fob on an E65/E66, or confirming a 2022 G-series fob by VIN, protects you from buying hardware that will not work.
• Where the car is. A mobile van visit is a different job from bringing the car to our storefront at 10740 Wilshire Blvd.
• Dealer involvement. On G11/G12 all-keys-lost and anything G70, the dealer's charges and any tow are theirs, and we cannot quote them for you.

What goes wrong with 7 Series keys most often?

Before anyone replaces a key, it is worth working out whether the key is the problem at all. These are the faults that come up for each era in our data:

• E38: the rechargeable remote battery dies and the buttons stop working while the chip still starts the car. Worn HU-series blades and cracked shells are common. An EWS no-start, where the key turns but the engine does not crank, can come from key and module sync faults.
• E65/E66: a dead or worn rechargeable fob battery, though the dash slot still reads the fob so the car usually starts. Electronic steering-lock (ELV) faults look like key failures. The dash key slot wears and fob shells crack.
• F01/F02: a dead coin cell and a 'key not detected' warning, with the emergency start position still working. Comfort Access door-handle sensor faults. Lost-fob replacement costs more than it did on E-series cars.
• G11/G12 and G70: a dead coin cell and the same warning. Digital Key enrollment issues on equipped cars. Lost-fob replacement is expensive and usually involves the dealer.

When should you call us, and when should you go to the dealer?

Call us for an E38, E65/E66 or F01/F02 in any key situation, including all-keys-lost, and for a G11/G12 when you still have at least one working key. Go to the dealer for a G11/G12 with no keys left and for any G70. If you are in between or not sure, call anyway. One phone call to Wilshire Lock & Key is cheaper than a wasted tow.

Here is why people call us. We have been in business since 1987, with a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans that cover 140 cities across Los Angeles and Ventura counties. We are one company, not a dispatch middleman passing your job to whoever is free. David, the owner and lead technician, oversees the work. The phone at (213) 577-1366 is answered 24 hours a day, 7 days a week, year-round.

One thing to check with any locksmith, us or anyone else: California requires locksmith companies to hold a BSIS LCO license. Ask for the license number before you let anyone near your car.

If you want the wider picture, our car key services page covers other makes, and the contact page has the ways to reach us.

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