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2004 Audi S4
Key Replacement - Save vs Dealer in Ventura County

Fair Prices | No Hidden Fees

Available
2004 Audi S4 Remote Flip Key
Remote Flip Key

Why pay $400+ at the dealer when you can get the exact same OEM-spec key for a fraction of the cost? EZ Car Keyz delivers professional key replacement at prices that make sense.

CA BSIS LICENSE LCO#6792
Save Hundreds Today Dealer Quality Key Upfront Pricing
Fast Response15-25
min arrival
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2004 Audi S4 car key service at your door in Ventura CA
Marco Levy • EZ Car Keyz 🔥
Licensed Mobile Locksmith • Oxnard, CA
15+
Yrs Exp
2004 Audi S4 car key service at your door in Ventura CA
Key specialists
Save 40-60%
Same OEM-quality key, fraction of the dealer price
Fixed pricing
Fixed Pricing
The quote on the phone is what you pay. Period.
Fast mobile service
Free Mobile Service
No trip fees, no towing costs - service included
805 Special
10% OFFCODE:EZ-805-2026

🔥 Fair price, pro key, your door 🔥

No exclusions on key type or service
REDEEM (805) 790-8162

2004 Audi S4
Key Options

Dealer-grade key for a fair, honest price

Remote Flip Key
Most popular Audi key typeMost Popular
2004 Audi S4 Remote Flip Key MYT8Z0837231
FCC IDMYT8Z0837231Part #4D0837231PButtons4BatteryCR2032Frequency315 MHzRemote StartNo
✓ In Stock · Programmed On-Site
Remote Flip Key
2004 Audi S4 Remote Flip Key KR55WK45022
FCC IDKR55WK45022Part #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Transponder Key
2004 Audi S4 Transponder Key
FCC IDPart #BHU66T6ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
Key
2004 Audi S4 Key
FCC IDPart #ButtonsBatteryFrequencyRemote StartNo
✓ In Stock · Programmed On-Site
On-site 2004 Audi S4 smart key options from EZ Car Keyz Ventura CA
Skip the Dealer Markup
Professional key, honest rate
On-site 2004 Audi S4 smart key options from EZ Car Keyz Ventura CA
🔧 PRO TIP
The 2004 Audi S4 uses a remote flip key with a transponder chip that has to be registered to the immobilizer before the car will start. The flip mechanism is a known wear point on these -- the blade pivot pin loosens over time and the blade starts flopping around instead of snapping cleanly into position. That's worth checking before you assume the electronics are the problem. The fob itself takes a CR2032, and a dying battery on these doesn't always kill the remote functions first. Sometimes the first sign is the car starting fine but the remote range dropping to arm's length. Swap the battery before you diagnose anything else. Also: the blade on a replacement key has to be cut correctly and the transponder has to be programmed -- both matter, and one without the other leaves you with a key that either won't turn or won't start.
Related services: Ignition Repair · Smart Key

Compare the Cost of a Audi S4 Key

See the price difference before you call

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
Why pay dealer markup for the same result?
Book Service (805) 790-8162

2004 Audi S4 Remote Flip Key Replacement - Fast, Affordable & Professional

Over in the College neighborhood in Ventura, a software engineer called me from the parking lot outside his office building. He'd watched his Audi flip key drop through a storm drain grate right at the curb. He was in the middle of a product launch -- standup at 9, client demo at 3 -- and he had exactly one window where he could step outside without the whole day falling apart.

He found me on his phone while standing over the drain.

I got there at lunch. The 2004 S4 was sitting exactly where he left it, locked, key gone. I pulled up the immobilizer data through the OBD port, identified the registered keys on file, and got to work programming a replacement flip key. Cut the blade on site to match his lock, registered the transponder, then tested all four remote buttons and confirmed the car started cleanly before I handed it over.

He was back at his desk before his afternoon demo. His car never moved.

The dealer process for something like this on a 2004 Audi involves calling service, waiting for an appointment, arranging a tow since the car has no working key, ordering the key -- sometimes from overseas if the part isn't stateside -- and coming back for a programming appointment once it arrives. That's a multi-day ordeal at minimum, and that's when everything goes smoothly. His car sat in a parking lot for about 45 minutes total. That gap between what the dealer process looks like and what the actual job requires is why I do this mobile.

Save vs the Dealer on Your Audi S4 Key

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

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BSIS Licensed Locksmith - California License LCO#6792
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Also serving: Casitas Springs · College · Downtown Ventura · East Ventura

Audi S4 Rapid Response, Done Right

Rapid response in the field

On-site 2004 Audi S4 car key programming in Ventura CA
Remote Flip Key | Rapid On-Site Service
2004 Audi S4 | Ventura County
On-site 2004 Audi S4 car key programming in Ventura CA
2004 Audi S4 Remote Flip Key
2004 Audi S4
Remote Flip Key | Programmed for Less
Estimated arrival time to Ventura
Quick & Affordable
Rapid Arrival
Available Today
Service location Ventura
Ventura
Best Rate Here
805 Area
Same-Day Keys (805) 790-8162

Five Stars for Fair Audi Prices

What honest rates sound like in reviews

A
Antoine M.
Dec 2025
★★★★★

“I am very pleased with the value of the service I received from Marco at EZ Car Keyz. They arrived extremely fast, opened my door in no time, and the price was right on point.”

Google Review
E
Ezra M.
Oct 2025
★★★★★

“I needed a new key for my car and Marco gave me the best quote by far. He showed up, made the new key on the spot, and everything works perfectly. Fast service and great value.”

Google Review
F
Felipe P.
Oct 2025
★★★★★

“Quick, affordable, and professional service. Marco made a new key for my motorcycle after I lost it and had me back on the road fast. Clean work, great price, and super friendly.”

Google Review
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On-site 2004 Audi S4 key service review - EZ Car Keyz Ventura CA
“Real savings, real reviews.”
On-site 2004 Audi S4 key service review - EZ Car Keyz Ventura CA
5.0 out of 5 - Based on Over 1,000 five-star Google reviews
Best Price (805) 790-8162

Audi S4 Mobile Service FAQ

Real costs, no dealer surprises

How long does it take to get a replacement key from an Audi dealer?
Owners on Audi forums describe a process that rarely goes the way the service advisor describes it on the phone. Best case, the key is in stock, you have a tow sorted, and you get a programming appointment within a couple of days. More commonly, the key has to be ordered, and depending on inventory, that can stretch out significantly. Once it arrives, programming requires another appointment during service hours. A few owners have reported showing up for programming only to have the dealer run into synchronization issues and ask them to come back again. What should be a single job turns into multiple trips, a tow, and days without a vehicle. On a 2004 S4, we handle the whole thing on site in one visit, usually under an hour.
What exactly is a remote flip key and what does it do on the 2004 S4?
Why does the dealer take so long on Audi key replacements?
My 2004 S4 starts fine but the remote buttons stopped working. Is the fob dead?
I bought a replacement flip key fob online for my 2004 S4. Can I program it myself?
Questions? Call (805) 790-8162

Audi S4 Key Service Areas

No trip fees in any service area

📍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
2004 Audi S4 car key service coverage in Ventura County CA
2004 Audi S4 car key service coverage in Ventura County CA
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Affordable 2004 Audi S4 Key Replacement

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