Lexus Auto Keys
Lexus RX 350 Key & Key Fob Replacement in Silver Spring, MD
For Lexus RX 350 key replacement, call MD Locksmith at (240) 366-2739. We’re a mobile locksmith, open 24/7, and can make a new car key on site when all keys are lost.
- Mobile service—we come to you
- Open 24 hours a day, 7 days a week
- New car key made on site when all keys are lost
- At least a 6-month warranty on parts and labor
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Which Lexus RX 350 Key Replacement Fits Your Year?
The right replacement depends on the RX 350’s year and key type. Earlier and later models can use different key systems, so tell us the model year and whether you have a separate key or a fob when you call.
If you’re comparing options for another Lexus, see our Lexus key replacement service. We’ll focus on the RX 350 and the key setup your vehicle uses.
Earlier RX 350 years — chip keys
Earlier vehicles use a chip key. Replacing one involves more than matching the shape of the key; the replacement also needs to work with the vehicle’s key system.
Most later RX 350 years — smart keys
Most later models use a smart key. If yours is lost, damaged, or no longer working as expected, tell us the year and trim so we can identify the type of service to discuss.

Lexus RX 350 Key Fob Problems That Can Disrupt a Drive
RX 350 drivers may rely on a key or fob for daily errands, commuting, and family trips. A problem with the key can leave you unable to unlock or start the vehicle, so describe what happens when you use it.
The key or fob is lost
If you’ve misplaced your only working key, call before the situation turns into a lockout. We make a new car key on site when all keys are lost.
The fob buttons stop responding
A fob that no longer responds may need attention. If you still have a working key, tell us what changed and whether the vehicle starts.
The key is cracked or worn
A damaged key can become harder to use. Avoid forcing it, and explain whether the damage is to the key itself or the fob when you call.
The vehicle does not recognize the key
If the RX 350 does not respond to a key that worked before, note whether a spare key behaves the same way. That detail can help narrow down the next step.
Need help now? (240) 366-2739
Is Your Lexus RX 350 Fob the Problem—or the Vehicle?
Try these simple checks before you call. They can help you describe the issue, but don’t force a key or attempt to open or repair the vehicle yourself.
- Try your spare key — If you have one, see whether the spare unlocks and starts the RX 350. If it works, the original key or fob may be the issue.
- Check the fob’s response — Notice whether the buttons respond at all or whether the vehicle reacts only when you use the key close by. Share what you observe when you call.
- Look for visible damage — Check the key or fob for cracks or other obvious damage. Don’t take it apart; tell us what you see.
- Describe what happens when you try to start — Tell us whether the key turns, the fob gets a response, or the vehicle remains unresponsive. For help with key fob programming, share the RX 350’s year and trim.
RX 350 Trim and Body Style: Details That Help Identify the Key
The RX 350 is an SUV, and the exact key setup can depend on the vehicle’s model year and configuration. A trim name by itself may not identify the key type, so share both details when you call.
RX 350 SUV trims
Tell us the trim shown on your vehicle documents or in the owner information, if you know it. This helps us discuss the specific RX 350 rather than assume every trim uses the same key.
Different model years
The broad key types change across RX 350 model years: earlier examples use chip keys, while most later models use smart keys. Let us know the year before arranging a replacement.
Need help now? (240) 366-2739
Frequently asked questions
Can two drivers share one Lexus RX 350 key or fob?
Two drivers can share a working key or fob, but having a spare gives the other driver a backup. Contact us to discuss a second key for your RX 350, and tell us its model year and trim.
What should I do if my RX 350 key turns but the vehicle will not start?
Don’t keep forcing or repeatedly turning the key. If you have a spare, check whether the vehicle responds to it, then call and explain what happens when you try to start your RX 350.
Can you make a Lexus RX 350 key if I have no original?
Yes. We make a new car key on site when all keys are lost. Call with your RX 350’s year and trim so we can discuss the replacement for your vehicle.
Should I get a spare RX 350 key before my last key fails?
Yes, arranging a spare while you still have a working key can help you avoid being left without one. Call with your RX 350’s year and trim to discuss a key or fob replacement.
Call for Lexus RX 350 Key Help
Call MD Locksmith at (240) 366-2739. We’re open 24/7 and come to you for car key service.