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Mercury Key Replacement Round Rock Texas
Mercury vehicles may no longer be produced, but thousands remain on the road in Texas thanks to their durability and Ford-shared engineering. If you lost your only key, need a spare transponder key, or the ignition jammed due to age, our mobile team provides fast and reliable Mercury key replacement in Round Rock, TX. We cut and program transponder and high-security keys, repair ignitions, and unlock Mercury models quickly at your location with clear pricing and a warranty.
Mercury Models We Service
Any Mercury still on the road deserves full support. We service every model, including:
- Grand Marquis
- Milan
- Mountaineer
- Mariner
- Sable
- Monterey
- Montego
- Mystique
- Cougar
- Marauder
Whether you drive a classic Grand Marquis or a rare Mercury Marauder, we carry keys and ignition parts suited for your vehicle.
Types of Mercury Keys
Mercury keys share technology with Ford, making them secure and widely supported by our tools. We provide:
- Standard non-chip keys: Used on older models with simple ignition systems.
- Transponder keys: Most 1998+ Mercury vehicles require chip authentication to start the engine.
- Remote-head keys: Key and remote combined into one convenient shell.
- High-security keys: Select later models and trims use laser-cut blades for enhanced protection.
Our technicians identify your key type by VIN, model year, and ignition system on arrival.
How Our Mobile Key Service Works
- Call or schedule online: Provide model, year, and location in Round Rock.
- We dispatch to you: Home, office, dealership lot, service-shop parking, or roadside.
- Decode or cut by code: We produce a factory-fit key even if everything is lost.
- Program transponder chip: We pair the key with the immobilizer if required.
- Test start & remote functions: Security and performance verified on-site.
No towing, no dealership wait lists — just fast on-site solutions with straightforward pricing.
Lost All Keys vs. Spare Key Options
If all Mercury keys are lost: We originate a new key from scratch. Ownership proof is required for theft prevention.
If you still have one key: Save time and money by duplicating now. Spare keys cost far less than emergency key creation.
For aging models, ignition components wear down and matching keys must be precise — duplicating early avoids costly repairs later.
Mercury Key Replacement Cost in Round Rock
Pricing depends on key type, model year, and whether ignition work is needed. Local price ranges include:
| Service | Typical Price | Includes |
|---|---|---|
| Standard metal key | $90 – $170 | Cut by code |
| Transponder key (chip) | $130 – $240 | Cut + programming |
| Remote-head key | $180 – $290 | Remote pairing + immobilizer sync |
| High-security laser key | $200 – $340 | Laser cutting + programming |
| Ignition repair or rebuild | $150 – $360 | Rekeying provided when possible |
| Car lockout service | $70 – $120 | Damage-free unlock |
You always receive a confirmed total before work begins — no hidden charges.
Common Mercury Key & Ignition Problems
- Key won’t turn: Worn wafers inside the ignition cylinder.
- Security light flashing: Transponder mismatch or failed chip.
- Key sometimes starts the car: Partial immobilizer pairing or weak antenna signal.
- Key broken off inside ignition: Metal fatigue over time — we extract and replace keys.
- Remote buttons stop working: Internal fob damage or low-voltage issue.
- Stolen or misplaced keys: We can remove old keys from memory on supported models.
We diagnose the problem first to ensure you pay only for what’s needed — not extra parts.
Mercury Security System & Transponder Info
Most 1998+ Mercury vehicles use Ford’s Passive Anti-Theft System (PATS), which prevents the engine from running unless a correctly programmed key is present. During service we:
- Pair the new key to the immobilizer
- Clear missing keys when supported
- Test security light for correct response
- Verify smooth engine start
We maintain your vehicle’s theft protection while restoring access and convenience.
Why Choose Us
- Mobile service: We come to you — no towing to a dealership.
- Fast dispatch: Covering Round Rock and nearby cities daily.
- Dealer-compatible programming tools: Perfect for Ford-based PATS systems.
- Clear pricing: You approve costs before we start.
- Warranty included: Cutting, programming, and electronics covered.
- Experienced technicians: Specializing in aging Mercury ignitions and keys.
Frequently Asked Questions
Can you make a Mercury key if I lost the only one?
Yes. We originate a new transponder key and program it to the immobilizer. Proof of ownership is required for security.
Do all Mercury vehicles require programming?
Most 1998+ models require security chip pairing before the engine will start. Older models may only need cutting.
Can you repair Mercury ignitions?
Yes — older Grand Marquis and Town Car-style cylinders often wear out. We rebuild or replace and match to your existing key cut when possible.
Can you provide a spare key?
Yes — duplicates are more affordable and help prevent lockouts or expensive emergencies later.
Do you have OEM and aftermarket options?
Yes — we explain the pros and cons of each so you choose what fits your budget and expectations.
Call or Schedule Service
Need Mercury key replacement in Round Rock, TX today? Call (512)523-4550 for fast mobile service or use our online scheduling form. Have your model, year, and ZIP code ready.
Grand Marquis, Mariner, Sable — whatever Mercury you drive, we will cut and program a new key on-site and get you back on the road quickly.
Other Services
Lost Car Keys
VIN cut and programming for transponder and push-to-start systems.
Learn MoreIgnition Repair
Rekey, repair, or replace faulty ignitions—on-site in Round Rock.
Learn MoreCar Lockout
Non-destructive entry for most makes and models, day and night.
Learn More
Service Area
Round Rock, Austin, Cedar Park, Pflugerville, Kyle, Buda, Georgetown, Hutto, Lakeway, Leander, San Marcos. 73301, 78602, 78606, 78610, 78612, 78613, 78615, 78617, 78630, 78641, 78642, 78652, 78653, 78664, 78665, 78680, 78681, 78682, 78683, 78701, 78702, 78703, 78704, 78705, 78712, 78721, 78722, 78723, 78724, 78725, 78726, 78727, 78728, 78729, 78730, 78731, 78732, 78733, 78734, 78735, 78736, 78737, 78738, 78739, 78741, 78742, 78744, 78745, 78746, 78747, 78748, 78749, 78750, 78751, 78752, 78754, 78756, 78757, 78759.

