2019 BMW 4 Series
Key Replacement - Save vs Dealer in Ventura County
All Keys Lost? | No Problem
Whether you lost your only key, it was stolen, or it just stopped working, we handle it. No existing key needed. Our technicians program new keys directly to your vehicle's computer.
Lost your key? Save 10% today
2019 BMW 4 Series
Key Options
Dealer-grade key for a fair, honest price
All BMW 4 Series Keys Lost? Compare Options
Lost all your keys? Compare your options
2019 BMW 4 Series Smart Key Replacement - Fast, Affordable & Professional
Over in the Saticoy area of Ventura, a guy flagged me down at the VFW post. He had a 2019 BMW 430i Gran Coupe sitting in the lot with a key that cranked the engine but killed it after half a second. Another locksmith had already been out, programmed a new NBGIDGNG1 fob, charged him, and left when it didn't work. Blamed the CAS module.
Problem is, the 2019 4 Series doesn't have a CAS module. It runs a FEM. Different architecture, different procedure entirely. That told me the first tech was guessing.
The real issue: BMW requires a three-way ISN (Internal Serial Number) sync between the key, the FEM, and the DME (engine computer, specifically the B58 MEVD17.2.G on his car). The other locksmith programmed the key to the FEM but never pulled the ISN from the DME. Without that match, the DME holds fuel injector release. Engine cranks, then dies. Every time.
I used my HU92 Lishi to verify the blade cut was correct, then connected through OBD2. Read the FEM data, pulled the DME ISN via bench connection on the B48 module, and wrote the complete sync to his new key. The NBGIDGNG1 is a 4-button smart key with the slot insert. Three consecutive start tests, all clean. I pulled up the ISN confirmation on my IM608 so he could see the FEM, DME, and key all matched.
He had already paid someone else for a half-done job. I made sure this one was finished right, on site, for a fraction of what the dealer quoted him over the phone.
Save vs the Dealer on Your BMW 4 Series Key
Get your key for hundreds less than the dealer. Same quality, same result, better price.
BMW 4 Series Rapid Response, Done Right
Rapid response in the field
BMW Owners Rescued and Reviewed
From lost keys to happy customers
“I had two Subaru key fobs made and Marco provided excellent service. He stayed persistent through multiple part orders to make sure everything was correct. Very thorough, punctual, and great communication throughout.”
“Tim went above and beyond. I struggled all day trying to program a new FOB and nothing worked. Tim helped me patiently, even recommending cheaper options since I was on a tight budget. He eventually came all the way to Ojai late at night and fixed everything.”
“My key fob stopped working while I was at Oxnard Harbor and I thought I was going to need a tow. EZ Car Keyz showed up fast, programmed a new fob, checked everything carefully, and made sure the car was fully functional before leaving.”
Related BMW Keys
Lost a different key? We cover that too
Did You Know?
BMW 4 Series Key Service Areas
Emergency coverage across the region
Emergency service available in all listed cities
