Question 1

What's the cheapest real way to replace a key for a 2017 BMW X6?

Accepted Answer

Call a mobile locksmith before you call the dealer. BMW key replacement at the dealer is consistently one of the more expensive stops in the industry, and that's before any tow charges, before waiting on a VIN-ordered part to arrive, and before separate line items for the fob, the blade cut, and programming labor.

With EZ Car Keyz you get the fob, the cut, and the programming done on site in one trip. No tow needed unless the car is somewhere genuinely inaccessible. The savings compared to the dealer route are real, and you can get a number when you call. Text your VIN first and I can tell you exactly what applies to your car before I even head out.

Question 2

How much more does all-keys-lost cost versus just adding a spare?

Accepted Answer

More. Noticeably more, and on a 2017 BMW X6 the gap is wider than on most vehicles.

When you have a working key, adding a spare is a comparatively clean job: connect to the OBD port, the immobilizer sees the existing key as authorization, and the new fob gets registered without heavy lifting. The module cooperates.

All-keys-lost is a different situation. There's no working key to authorize the procedure, so the process has to go deeper into the immobilizer. On this generation that can involve module-level access, security data extraction, and generating credentials from the VIN and hardware reads rather than from an existing enrolled key. It takes longer and requires more from the equipment. Dealers on BMW forums consistently quote significantly higher for all-keys-lost than for adding a spare, and some will push for a tow on top.

The practical advice is the same every time: if you have one key left, get a backup made now. The cost difference between "one key" and "no keys" is not small.

Question 3

Do aftermarket BMW fobs actually work, or is that a waste of money?

Accepted Answer

Hit or miss, and on a 2017 X6 the odds are not great.

Older BMW generations were more tolerant of aftermarket shells and fob bodies. This generation is pickier about what the immobilizer will accept during enrollment. There are forum threads where owners bought fobs online, got a locksmith or dealer to attempt programming, and the module either rejected the fob outright or enrolled it but left functions like comfort access dead.

The shell might look identical. The electronics inside are what matters, and cheap sourced fobs vary a lot in whether the internal hardware meets what the vehicle's security system expects.

I use fobs verified to work with this vehicle. If you already bought one online and want to know if it's worth attempting, call me and describe what you have. Sometimes it works out. Sometimes it doesn't, and it's better to know before paying for a programming attempt.

Question 4

My 2017 X6 fob battery is new but the comfort access on the door handles keeps failing. What's going on?

Accepted Answer

This is one of the more common complaints on this generation and it almost never turns out to be the fob itself.

The touch-sensitive areas on the door handles communicate with the vehicle's body electronics, not directly with the fob. When one handle stops responding to touch but the others still work, and the start button still recognizes the key when you're inside the cabin, the fob is doing its job fine. The problem is usually isolated to the handle sensor on that door or the wiring behind it.

Where it gets confusing is that a very weak fob battery can also cause inconsistent comfort access range, because the car is trying to ping the fob at a distance and not getting a strong enough response. So battery condition matters. But if you've got a fresh CR2032 seated correctly and one handle is still dead while the others are fine, stop chasing the key and start looking at the door hardware.

Question 5

Can I program a replacement fob for my 2017 BMW X6 myself at home?

Accepted Answer

No. This isn't a vehicle with an onboard add-a-key sequence you can run from the driver's seat.

Enrolling a new fob into the immobilizer on this generation requires diagnostic equipment connected to the OBD port. The module needs to verify credentials, the new key has to be introduced through a proper programming session, and the process is supervised by software that a generic consumer OBD reader won't run.

If you bought a fob online hoping to pair it yourself, you still need someone with the right tools to complete the job. That's not a knock on the idea of saving money upfront on the fob itself. It just means the programming step is not DIY on this vehicle.

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