
Car Key Replacement Modesto CA
Car key replacement, transponder programming, key fob replacement, ignition repair, and auto lockout service. We come to your location with a fully-equipped mobile van. All makes and models, same-day service.
Car Key Replacement & Programming
From a basic metal key copy to a fully-programmed smart fob for a luxury European car. We do it all. Our mobile vans are equipped with laser key cutters, transponder programmers, and a huge inventory of key blanks and remote fobs for virtually every vehicle on the road.
Standard Key Cutting
Traditional metal keys cut and duplicated on-site from your existing key or vehicle VIN. Works for most vehicles pre-2010.
Transponder Key Programming
Chip keys programmed to your vehicle's immobilizer system. We clone existing transponders or program new ones from scratch.
Key Fob Replacement
Lost or broken remote fob? We supply and program OEM-quality replacement fobs for all major makes: Honda, Toyota, Ford, Chevy, BMW, and more.
Smart Key / Proximity Key
Push-to-start smart keys programmed on-site. No dealership visit needed. We handle Nissan Intelligent Key, Ford IA Key, Toyota Smart Key, and others.
Ignition Cylinder Replacement
Key stuck or won't turn in the ignition? We replace worn or seized ignition cylinders and match them to your existing keys or cut new ones.
All Keys Lost Service
Lost every key to your vehicle? We generate new keys from your VIN and program them to your car's security system, even without an existing key.

We Cover Every Major Brand
Our inventory covers domestic, European, Asian, and luxury vehicles from the last 25 years. Here are some of the most common makes we service daily:
Ford
Chevrolet
Toyota
Honda
Nissan
BMW
Mercedes-Benz
Dodge / Jeep / RAM
Hyundai / Kia
Subaru
Volkswagen / Audi
Lexus / Acura / Infiniti
Your New Key in 4 Simple Steps
Call or Request Online
Tell us your vehicle year, make, and model, plus what key or fob you need. We'll give you a firm quote up front, no surprises.
We Come to You
Our mobile van arrives at your location: home, work, roadside, or parking lot. No towing needed. We bring the key shop to you.
Cut & Program On-Site
We use laser key cutters, transponder programmers, and diagnostic tools right in the van. Most keys are ready during the same visit.
Test & Verify
We test every key: door locks, ignition, remote functions, and push-to-start. If it doesn't work perfectly, we don't charge.
What Type of Key Do You Need?
Not sure what key your car uses? Here is a quick breakdown so you know what to expect.
Standard Metal Key
- Simple metal blade
- No electronics
- Door & ignition only
- Works on older vehicles
- Cut on-site
Transponder / Chip Key
- Embedded security chip
- Immobilizer compatible
- Requires programming
- Most 1998–2015 vehicles
- Ready on-site
Smart Key / Prox Fob
- Push-to-start capable
- Proximity detection
- Keyless entry & ignition
- Advanced programming needed
- Ready on-site
Prices are estimates. Actual cost depends on your vehicle year, make, model, and key type. Call for a firm quote.
Locked Out of Your Car?
Keys on the seat, in the trunk, or totally lost? Our mobile auto locksmiths come to your location with everything needed: air wedges, long-reach tools, key programmers, and a full key-cutting machine right in the van. No tow truck needed.
Keys Locked in Car
Doors locked with keys inside the cabin or trunk. We open vehicles without scratching paint or damaging seals.
Roadside Lockout
Stranded on the highway, at a parking lot, or in your driveway. Our mobile units arrive fast, day or night.
Push-to-Start Help
Proximity key not detected, dead fob battery, or system error? We troubleshoot keyless entry systems.
Ignition Issues
Key stuck in ignition, won't turn, or ignition cylinder failure. We diagnose and fix it roadside.
Key Fob & Transponder
Lost your fob or transponder key? We program new ones on-site, no dealership visit needed.
All Makes & Models
Domestic, European, Asian. Sedans, SUVs, trucks, and motorcycles. We carry tools for every vehicle type.
Car Key FAQ
How long does it take to get a new car key?
Most standard keys and transponder keys are cut and programmed on-site during the same visit. Smart keys and proximity fobs may take longer depending on the vehicle's security protocol. We carry a massive inventory of key blanks and fobs so you rarely have to wait for parts.
Can you make a key if I lost all my keys?
Yes. We can generate a new key using your vehicle's VIN (Vehicle Identification Number). We'll need your registration and photo ID for verification. Once we cut the key by code and program it to your car's immobilizer, any previously lost keys are deactivated for security.
Do you program smart keys and push-to-start fobs?
Absolutely. We have advanced diagnostic programmers that handle most smart key systems, including Toyota Smart Key, Honda Smart Entry, Ford Intelligent Access, Nissan Intelligent Key, BMW Comfort Access, and more. No dealership visit required.
Is it cheaper than the dealership?
Almost always, yes. Dealerships typically charge $200–$500+ per key plus towing. Our mobile service is typically 30–50% less and we come to you, so you also save the tow truck cost. We use OEM-quality or genuine OEM parts depending on your preference and budget.
What if my key broke off in the ignition?
We extract the broken key fragment using specialized extraction tools, then cut and program a new key. If the ignition cylinder itself is damaged, we can replace it and match the new cylinder to your existing keys or provide new ones.
Do you cover European luxury cars?
Yes. BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Jaguar, Volvo, and Mini are all within our capabilities. European vehicles often have more complex security systems, but our technicians have the training and equipment to handle them, often at a fraction of dealership cost.
Need a Car Key Right Now? We Come to You.
Do not get towed to the dealership and pay double. Our mobile van arrives at your location with everything needed to cut and program your new key on the spot. Same-day service, all makes and models.
Get a Free Quote | Fast Response
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Serving Modesto, CA200+ Five-Star Reviews
Real reviews from real customers. Over 200 people have trusted Nunes Locksmith — here are just a few of their stories.
“I had an issue with my ignition on my 2011 Silverado and was referred to James from a friend. Not only did he fix my ignition issue, he also noticed my key fob had an issue and ordered and reprogrammed them for me. James, I appreciate you showing up to my house so quickly. The whole process went smooth. Again... Thank you!!!”
“Yo, you just helped me get out of Tracy and avoided greedy people who wanted 300+ dollars. Best guy ever, he has the knowledge!!! Service was quick, I almost want to see him do it with a blindfold. He's that good!!!”
“Professional, fast response, competitive pricing, honest. JAMES saved the day and really helped us get back on the road! Thank you James! So happy we chose you!”
“Quick and cost friendly experience! I called James to have my late father's safe opened at 7pm last night. He finished up what he was doing and drove right over. Busted it opened within 10 minutes for a fair price. He was very kind and respectful. Highly recommend!”
“I've needed his services twice and both times have had quick responses and excellent work, very satisfied. Appreciate the honest, great service! Highly recommended.”
“Needed a local locksmith to make a duplicate key for my daughter's 2012 Honda Civic. Saw all the Google and Yelp reviews all giving 5 stars. Talked to James on the phone and set up an appointment. He was at my house right on time. I immediately understood why Nunes got all the 5 star reviews. Knowledgeable, personable and friendly. Price was equally great. If we need a locksmith in future, Nunes will definitely be my go to.”
“My friend accidentally locked his keys in the car with two dogs inside, and it was a very stressful situation. We called Nunes Locksmith, and he arrived quickly. He was professional, quick, and handled everything safely. We are so grateful for the fast response and excellent service—highly recommend!”
“Just moved in. Needed a locksmith to change our front door locks. James quoted a fair price, showed up as promised and completed the job! Thank you!”
“We had just received the keys to our newly purchased home and found several doors had different locks. James returned my call within seconds and arrived early. He went to Home Depot with me and went above and beyond to make sure things were correct and we were happy with the service! You can guarantee I will be calling James for all my Locksmith needs!”
“James is amazing. Very reasonable pricing. Very helpful. Helped us when we got locked out from our car. He even helped jump start our car. Highly recommended. Showed up within 20 minutes on Sunday evening. Thank you”
“Fantastic service from James! He was so quick to respond and was at our house in a matter of minutes to assist. His pricing was reasonable too! Would gladly use his services again if needed.”
“Best service and an amazing human being! He was fast, friendly, knowledgeable and helped me when I needed without hesitation. 100% will recommend his services to anyone that needs a professional and fair priced locksmith.”
“I had a great experience with James! I called, and he answered right away. I needed keys made for my 2012 Honda Civic, and he got the job done quickly and efficiently. He was friendly, professional, and easy to work with from start to finish. The service was fast, affordable, and he made the whole process stress-free. It's hard to find someone this reliable these days. I highly recommend him to anyone needing locksmith services!”
“James was quick, friendly, professional, and knowledgeable, would recommend to others. He was able to come same day to fix our broken front door handle and re-key our rear door. When disassembling the rear key lock, the assembly exploded into pieces because it was so old and flimsy. It was not a problem and James was able to quickly fix the issue. The rear lock actually required two hands to lock with a rear set up, and James got it working much more smoothly so it can be locked with one hand. My elderly grandmother will now have an easier time locking it now. Highly recommend and I would call James again in the future if I ran into any lock issues.”
“We got locked out of our warehouse, and productivity dropped to zero real quick. James arrived like the hero of a very stressful sitcom. He opened the warehouse door so fast, my employees thought he had the master key to the universe. Professional, friendly, and ridiculously good at what he does. If your business ever gets stuck outside its own building, call James — he'll save your whole workday.”