VENTURA COUNTY
6AM - 11:30PM • MOBILE SERVICE •
Call or Text (805) 790-8162
EZ Car Keyz California bear mascot
Fast Response Locksmith

2009 Cadillac STS
Key Replacement - Save vs Dealer in Ventura County

Stranded? | We Come to You Now

Available
2009 Cadillac STS Smart Key
Smart Key

All keys lost is our specialty. While the dealer would require a tow and days of waiting, we arrive at your location and have a new key cut and programmed on the spot.

CA BSIS LICENSE LCO#6792
Stolen Key? Covered No Key Required Same-Day Fix
Fast Response15-25
min arrival
1,000+reviews
See why they skip the dealer113KSubscribers
Certified 2009 Cadillac STS key replacement info from EZ Car Keyz Simi Valley CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
Certified 2009 Cadillac STS key replacement info from EZ Car Keyz Simi Valley CA
Key specialists
All Keys Lost?
We make new keys from scratch - no existing key needed
Fixed pricing
No Tow Required
We come to wherever the car is sitting
Fast mobile service
Emergency Service
Available 7 days a week, 6 AM to 11:30 PM
805 Special
10% OFFCODE:EZ-805-2026

🔥 No key, no stress, plus savings 🔥

Lost your only key? Still valid
REDEEM (805) 790-8162

2009 Cadillac STS
Key Options

Dealer-grade key for a fair, honest price

Push To Start
Most popular Cadillac key typeMost Popular
2009 Cadillac STS Smart Key M3N5WY7777A
FCC IDM3N5WY7777APart #25943676Buttons5BatteryCR2032Frequency315 MHzRemote StartYes
✓ In Stock · Programmed On-Site
Transponder Key
2009 Cadillac STS Transponder Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Smart Key
2009 Cadillac STS Smart Key
FCC IDPart #25995382ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
OEM quality 2009 Cadillac STS key fob from EZ Car Keyz Simi Valley CA
Skip the Dealer Markup
Professional key, honest rate
OEM quality 2009 Cadillac STS key fob from EZ Car Keyz Simi Valley CA
🔧 PRO TIP
The 2009 STS smart key (M3N5WY7777A, part 25943676) runs on GM's PEP (Passive Entry Passive Start) system through the Body Control Module. A weak CR2032 throws weird symptoms: "No Remote Detected" on the DIC, short unlock range, or push-to-start working only every third try. Before you panic, swap the CR2032 and check that the battery tab inside the fob housing is making clean contact. These fobs crack along the seam easily too, which lets moisture in and corrodes the board.
Related services: Ignition Repair · Smart Key

Locked Out? Compare the Solutions

All keys lost - two very different solutions

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
All keys lost is no problem for us
Book Service (805) 790-8162

2009 Cadillac STS Smart Key Replacement - Fast, Affordable & Professional

Got a call from a guy at a Cadillac meetup near Simi Valley Dog Park. He was already frustrated before we spoke. He'd called one of those low-ball Google ad locksmiths for his 2009 STS, the tech showed up, charged way more than quoted, and the smart key only half worked. It would lock and unlock but push-to-start was coin-flip territory. Sometimes it fired, sometimes the DIC just sat there with "No Remote Detected."

First thing he asked was how he could verify I was legit before spending more money. Fair question.

I gave him my BSIS license number right on the phone, LCO 6792. He looked it up on the state site while we were still talking. I'm also NASTF certified, which means I pull factory security data through the GM SPS pathway that unlicensed guys simply cannot access.

I ran the BCM security access on my Smart Pro and reprogrammed his M3N5WY7777A with the correct GM immobilizer relearn sequence. All five buttons came back solid, push-to-start responded first touch every time, and the passive entry pickup range was back to normal on every door handle.

He paid exactly what I quoted on the phone. The dealer had wanted significantly more for the same job, and the scam locksmith charged a good chunk on top of that and still couldn't finish it.

Save vs the Dealer on Your Cadillac STS Key

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

Get Pricing (805) 790-8162 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: Big Sky · Bridle Path · Corriganville · East Simi Valley

Cadillac STS Rapid Response, Done Right

Rapid response in the field

Licensed locksmith replacing 2009 Cadillac STS key in Simi Valley CA
Smart Key | Rapid On-Site Service
2009 Cadillac STS | Ventura County
Licensed locksmith replacing 2009 Cadillac STS key in Simi Valley CA
2009 Cadillac STS Smart Key
2009 Cadillac STS
Smart Key | Rescue Key
Estimated arrival time to Simi Valley
Priority ETA
Rapid Arrival
Available Today
Service location Simi Valley
Simi Valley
Help Is Close
805 Area
Same-Day Keys (805) 790-8162

Five Stars From Rescued Cadillac Drivers

Reviews from customers we rescued

P
Priscilla L.
May 2025
★★★★★

“I lost my Honda Passport key and called EZ Car Keyz. He came out and made a new key in under five minutes. Legendary service.”

Google Review
D
Dan G.
Mar 2024
★★★★★

“They responded instantly, showed up within an hour, and arrived exactly when they said they would. Made a copy and programmed a fob for my 2014 car with a worn ignition in about 15 minutes. The new key works perfectly and feels like a dealer key.”

Yelp Review
T
TJ P.
Jun 2025
★★★★★

“About 15 minutes after calling, he was already at my home. I had lost my original Ford key and he made and programmed a new one on the spot. Very fast, very professional.”

Google Review
Watch real savings, real jobs62KFollowers
5-star review of 2009 Cadillac STS key service by EZ Car Keyz Simi Valley CA
“Real savings, real reviews.”
5-star review of 2009 Cadillac STS key service by EZ Car Keyz Simi Valley CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Cadillac STS Mobile Service FAQ

Real costs, no dealer surprises

I lost all my keys for my 2009 Cadillac STS. Can you still make a new smart key on site?
Yep. All-keys-lost on the 2009 STS is a standard mobile job for us. The process is BCM security access through the OBD-II port, wipe the old fob registrations so nothing missing can start the car, cut a new emergency insert blade (profile B106), and program the new M3N5WY7777A fob to the vehicle. GM's theft deterrent relearn runs a timed security cycle during this, so expect about 30 to 45 minutes total. No tow truck, no dealer appointment, no waiting days for a slot to open up.
Do I need to tow my 2009 STS to the dealer if I have no working keys?
How long does an all-keys-lost replacement take on my 2009 STS?
My 2009 STS says "No Remote Detected" but the fob battery is new. What is going on?
Can I buy a 2009 STS smart key fob online and program it myself to save money?
Questions? Call (805) 790-8162

Cadillac STS Key Service Areas

Emergency dispatch to your location

📍Ventura County & SB
Ventura County service area map
805 LOCAL LOCKSMITH
need a key? 🔑
Santa Barbara
Santa BarbaraETA 30-35 min
Goleta
GoletaETA 30-35 min
Isla Vista
Isla VistaETA 30-35 min
Montecito
MontecitoETA 25-30 min
Carpinteria
CarpinteriaETA 20-25 min
Ojai
OjaiETA 20-25 min
Ventura
VenturaETA 10-15 min
Santa Paula
Santa PaulaETA 20-25 min
Fillmore
FillmoreETA 25-30 min
Oxnard
OxnardETA 10-15 min
Port Hueneme
Port HuenemeETA 10-15 min
Camarillo
CamarilloETA 15-20 min
Moorpark
MoorparkETA 25-30 min
Simi Valley
Simi ValleyETA 30-35 min
Thousand Oaks
Thousand OaksETA 20-25 min
Santa BarbaraGoletaMontecitoCarpinteriaOjaiVenturaSanta PaulaFillmoreOxnardPort HuenemeCamarilloMoorparkSimi ValleyThousand Oaks
Licensed 2009 Cadillac STS locksmith service area in Ventura County CA
Licensed 2009 Cadillac STS locksmith service area in Ventura County CA
Stranded in Ventura County? We respond fast

Emergency service available in all listed cities

SOS Call (805) 790-8162
Filmed on Location
Cadillac STS car key replacement video
113K+ Chose EZ Car Keyz

Stranded Without a Cadillac STS Key?

Emergency all-keys-lost service available 7 days a week. We bring everything to your location.

Trusted 2009 Cadillac STS locksmith service by EZ Car Keyz Simi Valley CA
Need a key?
Available 6AM - 11:30PM | 7 Days a Week
Find Us
Find Your
Car Key
Ventura County