Car key replacement
Replace lost or damaged automotive keys, including smart keys when supported by the vehicle system.
Low Rate Locksmith provides Acura RLX, a compact sedan, key replacement across the USA and Canada. If your RLX sedan key is lost, damaged, or not starting the car, we can typically cut and program a working smart key on-site after ID and ownership are confirmed.
| Question | Answer |
|---|---|
| Typical cost | Industry-typical (USD): smart key spare via mobile locksmith $120-$220; smart key all keys lost via mobile locksmith $200-$380. Dealership pricing is often $250-$450 for all keys lost, and spare-key pricing is commonly quoted by VIN. Exact price is confirmed at dispatch. Canadian customers pay the equivalent in CAD. |
| Programming required? | Yes. The 2014-2020 Acura RLX sedan typically uses a Honda/Acura smart key (push-button) system that requires OBD programming to add or originate keys. |
| All keys lost? | Often serviceable on-site after authorization is verified; all-keys-lost work typically includes smart-key enrollment to the immobilizer and start verification. |
| Online fob accepted? | Sometimes, but compatibility has to match the RLX sedan’s FCC ID/chip and the fob must be eligible to program (many used/reman units fail enrollment). |
| What to prepare | Vehicle year, your location, a photo ID, proof of ownership/authorization, and whether you still have a working key/fob (spare vs all-keys-lost changes the workflow). |
If your RLX sedan key is lost, you need a spare, or the push-to-start system won’t recognize the fob, this page helps you pick the right service path. Call (833) 439-8636 for mobile help in the USA and Canada, or email Info@lowratelocksmith.com for non-urgent questions.
Replace lost or damaged automotive keys, including smart keys when supported by the vehicle system.
OBD programming and enrollment for transponder and smart key systems, depending on vehicle support.
Button, shell, and function checks when a remote intermittently works or stops responding.
Diagnosis and repair when the key/ignition/start system issue is not only the fob.
Non-destructive entry when the RLX sedan is locked with keys inside or the smart key is unavailable.
Remove a broken key blade from a door/lock when applicable, then help restore operation.
⚠️ Impersonation warning: Confirm you’re calling (833) 439-8636 or emailing Info@lowratelocksmith.com as shown on this page. Be cautious of anyone requesting payment to unfamiliar accounts; ask for written estimate details before paying.
The 2014-2020 Acura RLX sedan is commonly equipped with a push-button start smart key system. On this model, adding a spare smart key or completing an all-keys-lost job typically requires OBD enrollment to the Honda/Acura smart key (push-button, smart key system) immobilizer.
Known identifiers seen on RLX sedan smart keys include ID47 chips and FCC IDs KR5V1X and KR580399900. Your exact match depends on what the vehicle accepts, so compatibility is confirmed before programming in the USA and in Canada.
Mechanical entry points that still matter when the fob battery dies or the emergency blade is needed.
The fob’s chip and electronics must be accepted by the immobilizer before the RLX sedan will start.
The start button and related modules must detect a valid smart key before allowing ignition.
Controls whether the vehicle will authorize start; enrolling keys is part of most replacements.
Some symptoms feel like a “bad key” but are caused by a steering lock or module communication issue.
We confirm start authorization and verify lock/unlock and remote functions as equipped.
| 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 fobs can work when the FCC ID/chip and board type match, but success varies by batch and prior pairing status. OEM fobs are typically more consistent, but either option still needs correct enrollment and on-site testing in both the USA and Canada.
“Key not detected” and no-start can come from a depleted fob battery, a weak vehicle 12V battery, or an incompatible fob. Stabilizing the vehicle battery voltage matters during programming on modern smart key systems.
This table summarizes the typical key system used on the RLX sedan by model year. Exact compatibility is confirmed before any cutting or programming.
| Years (context) | Key system (typical) | Notes |
|---|---|---|
| 2014-2020 (push-button start era) | Honda/Acura smart key (push-button, smart key system) | OBD add-key and OBD all-keys-lost programming are typical. Chip: ID47. Common FCC IDs: KR5V1X, KR580399900. |
Smart key work on the RLX sedan is usually priced by scenario (spare vs all keys lost) and by the exact fob required (FCC ID/chip). Costs can also change if the vehicle is not accessible, if there’s a no-start condition that needs diagnosis first, or if customer-supplied parts fail compatibility checks.
Below are industry-typical ranges in $USD for this model year band; exact price is confirmed at dispatch. Canadian customers pay the equivalent in CAD, and requirements can vary by province.
| Factor | Cost impact |
|---|---|
| Spare key with one working key | Usually lower. Mobile locksmith: $120-$220 (dealer commonly quoted by VIN). |
| All keys lost | Usually higher. Mobile locksmith: $200-$380; dealer: $250-$450 (often plus towing/appointments). |
| Smart Key / push-to-start | Usually higher than basic chip keys due to immobilizer enrollment and on-site verification steps. |
| Customer-supplied fob | Depends on compatibility and whether the fob can be enrolled; used/reman units frequently fail. |
| Emergency timing or remote location | May affect the service call portion of the total cost. |
| Vehicle-side issue (battery, ignition) | 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.
For the RLX sedan’s smart key system, we typically originate and enroll a new smart key to the immobilizer after ID and ownership are verified.
On a push-button RLX sedan, this often points to authorization or start-system communication issues rather than a “turn-key” problem.
Lock/unlock can work even when the immobilizer isn’t authorizing start; we diagnose and confirm options before programming.
If the RLX sedan won’t detect the smart key, we check fob condition, power/voltage, and system status before deciding on replacement.
Aftermarket and used fobs can be incompatible or previously locked; we can test whether a supplied fob is eligible to program.
We start with the fob battery and the vehicle 12V battery, then confirm fob compatibility (FCC ID/chip) and rule out start-system faults.
If ownership/authorization can’t be confirmed, we do not cut or program keys for the RLX sedan.
We confirm photo ID and proof of ownership/authorization (rules vary across the USA and Canada), then confirm the vehicle is on-site and accessible.
We identify the RLX sedan’s key system and confirm the correct smart key type (FCC ID/chip) before any programming is attempted.
When required, we program/enroll the smart key to the Honda/Acura smart key (push-button, smart key system) immobilizer through the OBD interface.
We test starting, lock/unlock, and remote features as equipped, then provide closeout notes of what was verified.
| Stage | Deliverable | Format |
|---|---|---|
| Vehicle ID | Confirmed vehicle context and key-system direction for the RLX sedan | On-site verification |
| Authorization | Documented ID + ownership/authorization check | Checklist + notes |
| Cutting | Emergency blade cut when applicable and supported by the supplied key | Physical key |
| Programming | Smart key enrollment to the immobilizer as required | OBD session record (summary) |
| Verification | Start test + lock/unlock + remote function test (as equipped) | On-site test results |
| Closeout | Final scope recap and care notes (battery/handling/backup key planning) | Written summary |
We confirm whether you need a spare key, an all-keys-lost origination, or diagnosis before any cutting/programming starts.
ID and proof of ownership/authorization are required in both the USA and Canada. If it doesn’t check out, we stop.
We check smart key compatibility (including known FCC IDs such as KR5V1X and KR580399900) before attempting enrollment.
We test start and core functions on-site so you’re not guessing whether the key is correctly paired.
For many situations, you can avoid towing by having the RLX sedan serviced where it’s parked.
We focus on automotive lock, key, and programming workflows rather than general repair guesswork.
When the vehicle system supports it, we can discuss OEM vs aftermarket options and confirm compatibility before you approve work.
We provide a plain-language record of what was done, what was tested, and what to do next (like making a spare).
This page is specific to Acura RLX sedan key service; broader Acura questions are routed to the make hub.
A spare smart key is usually less involved than an all-keys-lost origination for the RLX sedan.
The RLX sedan is typically push-button start; confirming the system up front avoids ordering the wrong parts.
If you buy online, match FCC ID/chip type and confirm the fob is new/virgin where required to enroll.
Make sure the RLX sedan is reachable (garage access, parking rules, security gates) to reduce service delays.
Low 12V battery voltage can interrupt programming. If the car battery is weak, address it before key enrollment.
Non-emergency scheduling can reduce the chance of additional service-call cost, especially in remote areas of the USA or 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: