TextHow Acura TLX Keys Changed Over the Years
1st Generation (UB1/UB2/UB3)
Your first gen TLX uses a proximity smart key with an ID47 (PCF7961X) transponder chip. That means push button start, a high security blade tucked inside the fob, and OBD-II programming through the diagnostic port. We pull the PIN code from your ECU and program the key right in your driveway. Straightforward job, no dealer needed.
1st Generation Facelift (UB1/UB2/UB3)
Your 2018 to 2020 TLX carries the same ID47 (PCF7961X) chip and smart key setup as the earlier models, just with an updated fob design and a slightly different FCC ID. Programming is still OBD-II based. The one thing we watch for on all keys lost situations is verifying the ECU PIN code, which we extract on site with our Autel IM608.
2nd Generation (KA1/KA2)
Your second gen TLX moved to the new KA platform and things got more involved. The smart key still uses a high security blade and CR2032 battery, but programming may require server authentication on top of OBD-II access. We carry the tools and subscriptions to handle that. If your specific year and trim needs dealer server access, we will tell you upfront before we roll out.
Which Key Does Your TLX Use?
Black proximity fob with the Acura logo on the back. Push button start, keyless entry, and an emergency blade hidden inside for when the battery dies.
Updated fob design, same basic functionality. Three buttons, push button start, and a high security emergency blade inside. Looks nearly identical to the earlier version.
Redesigned fob for the second generation TLX. Same CR2032 battery and three button layout. The emergency blade slides out from the bottom of the fob.
TLX Key Replacement Pricing
Every price includes the key blank, high security blade cutting, OBD-II programming, and full testing before we leave.
Us vs. the Dealer
When your only key stops working at 9 PM in Camarillo, the dealer is closed. We are not.
Skip the Dealer - Call (805) 790-8162Common Acura TLX Key Problems
Smart Key Fob Battery Drain
First check: where do you keep the fob at home? If it sits near where you park, your TLX proximity sensors keep pinging the key all night, draining the CR2032 in weeks. A Faraday pouch or moving the key farther from the car solves it.
Transponder Programming Failures
Shops blame the key when programming fails on a 2015-2020 TLX. Usually a bad PIN extraction or a tool that cannot read the Honda immobilizer. We use Autel IM608 to pull the 8-digit ECU PIN directly. If a locksmith said no, call (805) 790-8162.
High Security Blade Breakage
Your TLX emergency blade snapped off in the door cylinder. Happens more than you would think. The HU101 blade profile is thin by design, and if you are using it the fob battery died, a little too much force and it breaks. We carry replacements and cut on site.
Immobilizer Sync Issues After Battery Replacement
On the 2021-2023 TLX, disconnecting the car battery can knock the immobilizer out of sync with your smart key. Car cranks but will not start, or push-button ignores the fob. Known quirk. Requires a specific OBD-II relearn, not cycling the ignition.
Can You Program a TLX Key Yourself?
No self-programming option exists for any Acura TLX. Every generation requires professional diagnostic equipment to sync the transponder chip with the Honda immobilizer system. You need an OBD-II programmer like the Autel IM608 or Honda HDS to get the job done.
How It Works
Call or Text Us
Reach us at (805) 790-8162.
We Come to You
Wherever you are in Ventura County, from Simi Valley to Oxnard, we drive to your location.
Cut, Program, Test, Done
We cut your high security blade on a precision cutter, program the smart key through the OBD-II port using our Autel IM608, and test every function: proximity unlock, push button start, and door cylinder.
Related Services
Did You Know?
The 2015 TLX introduced Acura's first dual clutch transmission on the 2.4L models, paired with an electronic push button shifter that replaced the traditional gear lever. Drivers either loved it or absolutely hated it. There was no middle ground.
KEY REPLACEMENT ACROSS ALL OF VENTURA COUNTY
We come to you, anywhere in Ventura County. No shop visit, no towing. Our mobile locksmith arrives at your home, office, or roadside.
See an Acura Key Cut Live
Watch our tech program an Acura proximity fob on site.
Need an Acura Key? Call Now
Mobile Acura locksmith serving all of Ventura County. We bring the key to you.
