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Fast Response Locksmith

2016 Cadillac ATS
Key Replacement - Save vs Dealer in San Diego

On-Site in Minutes | Key Done in Under an Hour

Available
2016 Cadillac ATS Smart Key
Smart Key

Time matters when you need a car key. Our technicians are dispatched quickly with everything needed to cut and program your replacement key on the spot. No delays, no runaround.

CA BSIS LICENSE LCO#6792
Rapid Response Same-Day Keys Quick Turnaround
Fast Response15-25
min arrival
100+reviews
See why they skip the dealer113KSubscribers
Key specialists
Fast Response
Average arrival time: 15-25 minutes
Fixed pricing
Same-Day Service
Call now, get your key today - no waiting days
Fast mobile service
Done in Under 1 Hour
Key cut and programmed in 20-45 minutes
619 Special
10% OFFCODE:EZ-619-2026

🔥 Quick service, quick savings 🔥

No waiting for your discount to apply
REDEEM (619) 876-1271

2016 Cadillac ATS
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Cadillac key typeMost Popular
2016 Cadillac ATS Smart Key HYQ2AB
FCC IDHYQ2ABPart #13580811Buttons5BatteryCR2032Frequency315 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Push To Start
2016 Cadillac ATS Smart Key HYQ2EB
FCC IDHYQ2EBPart #13598538Buttons5BatteryCR2032Frequency433 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Push To Start
2016 Cadillac ATS Smart Key HYQ2AB
FCC IDHYQ2ABPart #13510253Buttons4BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Smart Key
2016 Cadillac ATS Smart Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
🔧 PRO TIP
The 2016 ATS runs a proximity smart key system -- five buttons, CR2032 battery. One thing owners miss: the fob has a hidden mechanical blade inside. If the battery dies completely or the vehicle loses communication with the fob, that blade pulls out and gets you into the door. There's a small release tab on the fob body. From there you can get in and use the fob's backup function at the start button to crank the car. So a dead fob is not a lockout if you know where to look. The vehicle can store up to eight paired fobs, same as other GM vehicles of this era. And if you bought a replacement fob online, it still needs to be paired to the car with professional diagnostic equipment -- there is no self-programming sequence for this system.
Related services: Ignition Repair · Smart Key

Cadillac ATS Key Today vs Next Thursday

Our timeline vs dealer timeline

EZ Car Keyz
EZ Car Keyz
Dealership
Average Cost
✓ $$
✕ $$$$
Location
✓ We come to you
✕ You drive there
Wait Time
✓ 20-45 min
✕ 2-5 days
Same-Day
✓ Yes
✕ Rarely
All Keys Lost
✓ No problem
✕ Tow required
OEM Quality
✓ Yes
✓ Yes
EZ Car Keyz wins 5 out of 6
Back on the road before the dealer even calls back
Book Service (619) 876-1271

2016 Cadillac ATS Smart Key Replacement - Fast, Affordable & Professional

A guy out in Fanita Ranch had been fighting his 2016 Cadillac ATS for weeks before he called me. Every time he parked, the key situation turned into a production: jiggle the shifter, wrestle the wheel a little, pull harder than he should have to. The key was going in fine but coming out stubborn. He had a dealer appointment lined up and was bracing for a big number.

He called asking for a second opinion. I told him to hold off on booking anything until I took a look.

When I got there, I went straight to the ignition cylinder and the park interlock mechanism. What I found was a combination of worn internal wafers in the cylinder and a sluggish interlock sensor that wasn't releasing cleanly. The interlock is what's supposed to free the key when the transmission is confirmed in park -- when that sensor gets lazy, the key binds even if you're doing everything right. Before touching anything mechanical, I backed up the relevant module data so nothing got lost in the process. Then I decoded the lock, swapped the worn wafers, and cleaned up the interlock linkage.

After that, his fob paired back up through the OBD port without any drama. I pulled the old wafers out and laid them on the hood next to the new ones so he could see exactly what had been causing the problem. He seemed relieved that it wasn't the whole cylinder.

He saved a good chunk compared to what the dealer quoted, which included a full cylinder assembly he didn't need. The key comes out clean now, every time, no ritual required.

Save vs the Dealer on Your Cadillac ATS Key

Get your key for hundreds less than the dealer. Same quality, same result, better price.

Get Pricing (619) 876-1271 Text Us
BSIS Licensed Locksmith - California License LCO#6792
BSIS Licensed
CA Bureau of Security & Investigative Services
NASTF Certified Automotive Locksmith - Vehicle Security Professional
NASTF Certified
National Automotive Service Task Force
Fully Insured Locksmith - Hiscox Liability and Vehicle Damage Coverage
Fully Insured
Liability & vehicle damage coverage
Google Guaranteed Locksmith - Verified and Background Checked
Google Guaranteed
Verified & backed by Google
Also serving: Carlton Hills · Downtown Santee · Fanita Ranch · Santee Lakes Area

Cadillac ATS Rapid Response, Done Right

Rapid response in the field

2016 Cadillac ATS Smart Key
2016 Cadillac ATS
Smart Key | Done in Minutes
Estimated arrival time to Santee
Fast Dispatch
Rapid Arrival
Available Today
Service location Santee
Santee
Rapid Service Zone
619 Area
Same-Day Keys (619) 876-1271

Fast Service, Five-Star Reviews

Reviews from drivers who got keys fast

K
Kelly C.
Dec 2024
★★★★★

“My car keys were stolen on a cold evening and Nick drove all the way out to Santa Barbara. He got into my car, made a new key, and charged $100 less than another company. Friendly, skilled, trustworthy, and genuinely caring. Nick is a hero.”

Yelp Review
K
Kane G.
Apr 2024
★★★★★

“Tim is a hero. He programmed a master proximity key for a newer Volkswagen that multiple locksmiths refused to touch. He spent hours until late at night making sure every function worked perfectly. The skill level here is incredible.”

Yelp Review
N
Natasha S.
Sep 2025
★★★★★

“Very professional and extremely affordable. The price was literally about three times cheaper than what my dealership quoted me. Fast service and no stress at all. Highly recommend.”

Google Review
Watch real savings, real jobs62KFollowers
5.0 out of 5 - Based on Over 100 five-star Google reviews
Best Price (619) 876-1271

Cadillac ATS Mobile Service FAQ

Real costs, no dealer surprises

Do I need to bring my 2016 Cadillac ATS somewhere to get a key replaced?
Not with us. EZ Car Keyz is fully mobile -- I come to your driveway, your job site, or wherever your ATS is sitting in Santee, including out in Fanita Ranch. Cadillac dealers typically want the car driven in with a working key, or towed if you're already locked out. We handle everything on site: cut the blade, pair the fob to the vehicle, test every function. You don't move the car, you don't wait in a service lounge, and you don't deal with a ten-day turnaround.
How does the mobile key replacement process work for the ATS?
What do I need to have ready when you show up?
My 2016 ATS shows a key warning on the dash but the fob battery is fresh. What's going on?
Can I just buy a replacement fob online and have it programmed?
Questions? Call (619) 876-1271

Cadillac ATS Key Service Areas

Quick arrival, wherever you are

📍San Diego County
San Diego County service area map
619 LOCAL LOCKSMITH
need a key? 🔑
San DiegoChula VistaOceansideEscondidoCarlsbadEl CajonVistaSan MarcosEncinitasNational CityLa MesaSanteePowayCoronado

Same-day service available in all listed cities

Get Help Now (619) 876-1271
Filmed on Location
Cadillac ATS car key replacement video
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Same-Day Cadillac ATS Key Replacement

From your call to a working key in about an hour. No dealer delays, no multi-day wait.

Unbeatable 2016 Cadillac ATS key price from EZ Car Keyz Santee CA
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