2016 BMW 5 Series
Key Replacement - Save vs Dealer in San Diego
Why Pay Dealer Rates? | Mobile Service

Dealerships charge a premium because they can. We don't. Same key, same programming, same quality - just without the markup. Call for an honest quote with no hidden fees.

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2016 BMW 5 Series
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2016 BMW 5 Series Smart Key Replacement - Fast, Affordable & Professional
Out in Ramona Highlands, near the VFW off Main Street, a guy flagged me down because his 2016 BMW 5 Series would crank but immediately die. He had already paid another locksmith to make him a replacement key. The other locksmith had cut and programmed a fob, the car recognized it, but the engine refused to run more than a second.
The other locksmith had told him the immobilizer module was failing and walked off the job. That diagnosis cost the guy money and left him stranded.
I asked him one question before I touched anything: did the previous guy mention reading the engine control unit during programming? He stared at me. He had no idea what I was talking about, which told me everything.
On this generation of BMW, the key programming process requires pulling an internal security number directly from the engine computer and writing that number into the key during the sync. Without it, the immobilizer sees a valid fob but the engine control unit never gets the release signal. The car cranks, fires briefly, and dies. It mimics a fuel or spark problem badly enough that people chase the wrong thing for hours.
I connected through the OBD port, read the security data from the engine computer, and completed the full three-way sync between the fob, the immobilizer, and the engine control unit. Started clean on the first try. I ran it three more times while he watched the screen on my tool confirming the sync was complete.
The immobilizer module was never the problem. It was the procedure.
He had already paid the first guy and was bracing to pay dealer rates on top of that. What he paid me was a fraction of what the dealer quoted him, and the job was done in his driveway.
Save vs the Dealer on Your BMW 5 Series Key
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BMW 5 Series Rapid Response, Done Right
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“I called Marco with Ez Car Keyz San Diego for a BMW smart key for replacement, he offered me a great deal showed up on time and charged the same price he quoted. Very friendly and professional service. Highly recommended.”
“Showed up on Saturday and made a key for my bmw, best price in town. Friendly professional and recommended”
“My key got wet at the beach and my Toyota tacoma wasn’t recognizing the key so i called marco with ez car keyz he was able to come within 25 minutes and make a replacement smart key for my truck. Very nice dude and he made a perfect key. Highly recommended”
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