2016 Acura RLX
All-Keys-Lost - We Handle It in Ventura County

Q: Is a locksmith cheaper than the dealer for 2016 Acura RLX smart keys?

Most of the time, yes. The RLX uses dealer-level security for smart key registration, but dealerships typically build the invoice from parts plus labor plus shop fees, and they usually will not program a customer-supplied fob. I am performing the same immobilizer registration through the diagnostic port, just as a mobile service. If you prefer the dealer for warranty paperwork, that is your call. If you want a working key again without towing and wait times, I handle it on site.

Q: Does your RLX key service include cutting the emergency insert and programming everything?

Yes. My RLX service includes cutting the HO01 emergency insert, programming the proximity key to the One-Push Start system, and full function testing. I verify lock, unlock, trunk, panic, and remote start if equipped and enabled. I also check and replace the CR2032 battery if needed and confirm proper battery contact tension. When I leave, the key is fully registered and tested, not just handed to you in a box.

Q: Yellow key light and “Keyless access system error.” RLX starts then stalls. What failed?

Scan it before buying parts. A yellow key light with “Keyless access system error,” where the engine starts and immediately stalls, is often a communication or power issue, not a weak fob battery. I have seen U0155 (lost communication with instrument cluster) alongside B1605 (keyless access unit communication fault). In one Ventura case, the fix was a blown fuse labeled “Meter.” Always check codes and power supply circuits first.

Q: Do I need KR5V1X or KR580399900 for my 2016 Acura RLX smart key?

They are not interchangeable. KR5V1X is the 4-button 315 MHz family, common part numbers 72147-TZ3-A01 Driver 1 and 72147-TZ3-A11 Driver 2. KR580399900 is the 5-button 902 MHz remote-start style, including 72147-TZ3-A51. Both use ID47 Hitag3 proximity technology, but they must match your vehicle’s original FCC ID exactly. I always confirm FCC ID and part number before booking programming to avoid wasted time and money.

All Keys Lost? | No Problem

Available Thursday

Smart Key

CA BSIS LICENSE LCO#6792

All Keys Lost? Easy No Tow Required New Key On-Site

Fast Response15-25

min arrival

1,000+reviews

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2016 Acura RLX lost key replacement options from EZ Car Keyz Ventura CA

All Keys Lost?

We make new keys from scratch, no existing key needed

Save 40-60%

Same OEM-quality key, fraction of the dealer price

Key Specialists

Fully equipped mobile unit, all makes and models

805 Special

10% OFFCODE:EZ-805-2026

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2016 Acura RLX
Key Options

All keys lost? We make new keys from scratch on-site

Push To Start

Save 40-60% on Your Acura RLX Key

See how much you save with EZ Car Keyz vs the dealership

EZ Car Keyz

Dealership

Average Cost

✓ $$

✕ $$$$

Location

✓ We come to you

✕ You drive there

Wait Time

✓ 20-45 min

✕ 2-5 days

Same-Day

✓ Yes

✕ Rarely

All Keys Lost

✓ No problem

✕ Tow required

OEM Quality

✓ Yes

EZ Car Keyz wins 5 out of 6

Same key, fraction of the dealer price

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2016 Acura RLX Smart key Replacement - Fast, Affordable & Professional

In Ventura, out at Pacific View Mall, my phone rang with that tight, controlled voice that tells you something just happened.

She had been loading shopping bags while her kids were strapped in. She turned back and her purse was gone. Keys, wallet, phone. Another shopper handed her a phone, and she called her husband, then the police, then me.

Her husband had already called the dealer. They told him they would have to order a smart key, tow the RLX in, and wait a few business days. They also mentioned rekeying because the physical insert was stolen too.

On this 2016 Acura RLX, all-keys-lost is not the same as adding a spare. I pulled immobilizer access, performed a One-Push Start key memory reset so the missing transmitter was erased, then registered two new ID47 proximity keys. After that, I cut fresh HO01 emergency inserts so she would still have manual entry if a fob battery dies.

When it fired up and stayed running, she finally exhaled. She locked it using the touch handle, loaded the kids back in, and drove home with working keys the same day.

Lost Your 2016 Acura RLX Key? We Can Help

Lost all your keys? We make new ones on-site. No tow truck needed. Emergency service.

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Acura RLX Mobile Service in Action

Mobile service in action

2016 Acura RLX

Smart key | Programmed On-Site

10-15 min

To Your Location

Available Today

Ventura

Your Location

805 Area

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Acura Owners Rescued and Reviewed

From lost keys to happy customers

B

Bradley B.

May 2024

★★★★★

“Locked out on a weekend night and everyone else wanted $300+. EZ Car Keyz sent Roman late at night for much less. He worked for over an hour and did not give up until the door opened. They even made a new key on the spot.”

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C

Christopher H.

Sep 2025

★★★★★

“He arrived within 30 minutes and had everything finished in another 30 minutes for two cars. Everything was programmed and tested perfectly. Cheapest price in town and very honest service.”

Google Review

J

Joseph C.

Apr 2024

★★★★★

“I needed two keys made for my Honda Element. Friendly, fast, fair pricing, and far better than any other locksmith I have used in the area. Best service by far.”

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Customer review after losing 2016 Acura RLX key - EZ Car Keyz Ventura CA

★ 5.0 out of 5 - Based on 1,000+ Google Reviews

Need Help? (805) 790-8162

2016 Acura RLX Pricing Questions

Pricing, process, and what's included

How much does it cost to replace a 2016 Acura RLX smart key in Ventura?▼

Pricing depends on whether you are adding a spare or you are completely all-keys-lost. Those are two different procedures on the RLX because lost-key situations require immobilizer reset and re-registration. I quote it as one complete mobile job to Pacific View Mall or anywhere in Ventura, so you are not stacking parts, programming, and cutting fees separately. Call EZ Car Keyz, tell me what you have or do not have, and I will give you a straight number before I roll.

Is a locksmith cheaper than the dealer for 2016 Acura RLX smart keys?▼

Does your RLX key service include cutting the emergency insert and programming everything?▼

Yellow key light and “Keyless access system error.” RLX starts then stalls. What failed?▼

Do I need KR5V1X or KR580399900 for my 2016 Acura RLX smart key?▼

Questions? Call (805) 790-8162