Car key replacement
Replace lost or damaged automotive keys and confirm lock/unlock/start operation on-site in the USA or Canada.
Low Rate Locksmith provides Acura TLX, a compact sedan, key replacement across the USA and Canada. Service availability depends on location (ZIP/postal code), and TLX trims/markets vary—key type and remote features are confirmed before work begins.
| Question | Answer |
|---|---|
| Typical cost | Industry-typical (mobile locksmith): $180-$350 for a spare smart key, or $300-$550 when all keys are lost (USD; Canadian customers pay the equivalent in CAD). Exact price is confirmed at dispatch and depends on year, key type, parts, programming, and location in the USA or Canada. |
| Programming required? | Yes for most 2015-2026 TLX smart keys—pairing to the Honda/Acura smart key system is typically done via OBD. |
| All keys lost? | Often yes—after ID and proof of ownership are verified, a locksmith can originate and enroll a replacement smart key for the TLX sedan. |
| Online fob accepted? | Sometimes, but compatibility (FCC ID/chip type) must match your TLX sedan before any cutting or programming. |
| What to prepare | Model year, your location (ZIP/postal code), photo ID, proof of ownership/authorization, and whether you have a working key. |
Replace lost or damaged automotive keys and confirm lock/unlock/start operation on-site in the USA or Canada.
Enroll smart keys and add spares when the vehicle supports OBD programming for the TLX sedan.
Triage “buttons stopped working” cases: battery, shell damage, and compatible replacement options.
Non-destructive entry methods when keys are locked inside the TLX sedan (authorization required).
Help when the car won’t recognize a key, the start system is inconsistent, or the cylinder/mechanism is worn.
Remove broken blade pieces from door/ignition hardware when an emergency key blade is involved.
If you need make-level help instead of the TLX sedan specifically, use the Acura locksmith service hub to route to the right page.
Most 2015-2026 TLX sedan configurations use a push-to-start smart key system with an immobilizer. That means the fob isn’t just a remote—its chip must be enrolled to the vehicle before the engine will start. When all keys are lost, the immobilizer has to accept the new smart key as an authorized credential.
For customers in Canada, fob frequency/part variants can differ between markets, so we confirm compatibility before we cut or program anything.
The smart transmitter used for lock/unlock and proximity start functions.
The embedded chip (commonly ID47 on the TLX sedan year bands listed) used by the immobilizer.
The emergency blade (when present) used for mechanical entry if the fob battery is dead.
Mechanical lock hardware that may require an emergency blade for entry.
Push-button start components that must receive a valid, enrolled smart key signal.
Steering lock behavior can mimic “key not detected” or “won’t start” symptoms on some vehicles.
| Option | Best for | Watch out for |
|---|---|---|
| Acura dealership | OEM parts and dealer records | Towing, appointments, higher total cost |
| Mobile locksmith | Lost keys, spare keys, no-tow situations | Requires ID, ownership proof, compatible parts |
| Online fob | Possible savings when exact part is known | Used/refurbished fobs may be locked or incompatible |
| DIY programming | Add-a-key for older mechanical/transponder | Not suitable for all-keys-lost or modern smart key |
Aftermarket shells and remotes can work, but the deciding factor is whether the electronics and FCC ID match what the vehicle accepts for that year band. OEM parts can reduce compatibility risk, especially for Canadian-market vehicles.
“Key not detected” can come from a weak fob coin cell, a low 12V vehicle battery, or a fob that’s not enrolled (or not compatible). We confirm the basics first before treating it as a programming job.
| Years (context) | Key system (typical) | Notes |
|---|---|---|
| 2015-2020 (TLX sedan) | Smart key system / push-to-start (Honda/Acura smart key) | Typical chip: ID47. Common FCC IDs seen: KR5V21, KR5V1X, KR580399900. Add-a-key and all-keys-lost are typically OBD programming. |
| 2021-2026 (TLX sedan) | Smart key system / push-to-start (Honda/Acura smart key) | Typical chip: ID47. Common FCC ID seen: KR5T21. Add-a-key and all-keys-lost are typically OBD programming. |
Exact key type depends on trim/market and what’s already enrolled. If you’re in Canada, confirm the fob’s FCC ID/part compatibility before ordering a replacement.
For the TLX sedan, pricing usually depends on whether you still have a working smart key (spare/add-a-key) or you’re at zero keys (all keys lost). Smart key parts, immobilizer enrollment, and any emergency blade cutting are the typical drivers of total cost.
These ranges are industry-typical for mobile locksmith service and are confirmed at dispatch. Pricing is shown in $USD; customers in Canada pay the equivalent in CAD.
| Factor | Cost impact |
|---|---|
| Spare key with one working key | Usually lower (common mobile range: $180-$350 for a spare smart key) |
| All keys lost | Usually higher (common mobile range: $300-$550 for smart key origination + enrollment) |
| Smart key / push-to-start | Usually higher than basic mechanical keys due to parts cost and immobilizer pairing |
| Customer-supplied fob | Depends on compatibility; mismatched or locked fobs can’t be enrolled |
| Emergency timing or remote location | May affect the service call portion depending on where you are in the USA or Canada |
| Vehicle-side issue (battery, start system) | May require diagnosis before key work can be completed |
Final pricing is confirmed after the vehicle year, key type, location, authorization, and compatibility are reviewed.
The TLX sedan uses a smart key immobilizer; after authorization, a replacement fob can be originated and enrolled via OBD in many cases.
If your TLX sedan uses push-to-start, “turn-key” symptoms often point to authorization or start-system faults, not a simple cut issue.
Lock/unlock may still work while the immobilizer rejects the chip—programming or compatibility is the usual next check.
Proximity start depends on the fob, antenna path, and vehicle 12V power; we diagnose before replacing parts.
Used/refurbished fobs can be locked, wrong FCC ID, or wrong chip—confirmation comes before any cutting/programming.
We check fob battery, vehicle 12V battery, fob compatibility (FCC ID/chip), and whether the start system is seeing an enrolled credential.
No ID and ownership/authorization means no service—this policy applies in the USA and Canada.
We confirm the service address, validate ID, and review proof of ownership/authorization. Requirements can vary by state and province, including in Canada.
We identify the TLX sedan’s key system and confirm compatibility (including FCC ID/chip type) before you approve any work.
When applicable, we cut an emergency blade and enroll the smart key to the Honda/Acura smart key system using OBD programming procedures.
We verify locking functions and starting operation on-site, then provide a documented closeout of what was done.
| Stage | Deliverable | Format |
|---|---|---|
| Vehicle ID | Recorded TLX sedan year band and key system notes | Work order notes |
| Authorization | Confirmation of ID + ownership/authorization reviewed | On-site verification |
| Cutting | Emergency key blade cut (when applicable) | Physical key blade |
| Programming | Smart key enrolled to the immobilizer/smart key system (when applicable) | OBD programming session record |
| Verification | Lock/unlock + start verification (features tested as supported) | On-site functional test |
| Closeout | Documented scope, parts used (OEM/aftermarket when known), and next steps | Customer-facing summary |
We confirm the problem (spare vs all keys lost vs “key not detected”) before cutting or programming anything.
ID and proof of ownership/authorization are required for TLX sedan key services in both the USA and Canada.
We check year band and smart key identifiers (including FCC ID where applicable) to reduce mismatched-part failures.
We test start authorization and basic remote functions on-site before the job is closed.
Support is designed for no-tow situations—useful for lockouts and all-keys-lost scenarios.
Automotive key cutting and immobilizer enrollment require dedicated tools and documented procedures.
When compatible parts are available, we can discuss OEM vs aftermarket pathways for the TLX sedan.
You receive a clear record of what was provided and what was tested—useful for fleets, leases, and insurance.
We route service by location and authorization, not vague coverage claims.
If you still have one working smart key for the TLX sedan, adding a spare is usually simpler than an all-keys-lost job.
TLX sedan configurations commonly use smart key/push-button start, which changes parts and programming requirements.
Match FCC ID/chip type before buying. This matters in both USA and Canada because market variants can differ.
Make sure the TLX sedan is accessible for OBD programming and function testing (parking garages and tight spaces add complexity).
A low 12V battery can interrupt smart key enrollment. Stabilizing voltage can prevent repeat visits.
If you’re not locked out, scheduling during normal planning windows can reduce service-call variability by location.
Prefer phone dispatch? Call (833) 439-8636. You can also email info@lowratelocksmith.com (avoid sending sensitive documents; showing documents on-site is acceptable in the USA and Canada).
Share your year + situation and we'll confirm compatibility and a typical price range. Or call the dispatch number directly.
Other Acura models and services from Low Rate Locksmith: