Unlock app for genuine car navigation unitsERC Calculator
Unlock your navigation system, simply.
Get an ERC unlock code for your genuine car navigation unit in minutes.
Pick your model, scan the number, done.
- No account required
- Payment through Apple only
- Apple handles refunds, we support you throughout
Unlock in six steps
See the full walkthrough- 1 Navigation unit
Hold Menu while toggling the headlights three times
Press and hold the physical Menu (or Info) button on the bezel while switching the headlights ON and OFF three times.
- 2 Navigation unit
Tap Service Information
When the diagnostic screen opens, tap Service Information (サービス情報).
- 3 Navigation unit
Tap Next Page
Tap Next Page (次ページ) on the touchscreen to see the remaining menu options.
- 4 Navigation unit
Tap Enter the Security Release Code
Tap Enter the Security Release Code (セキュリティ解除 / ERC).
- 5 Navigation unit
Read the 16-digit serial number
The 16-digit serial number appears on screen. This number is needed to issue your unlock code.
- 6 App
Enter the model and number in the app
In ERC Calculator, choose your model and enter the 16 digits. After purchase your unlock code appears immediately.
When people use it
After a battery change or flat battery
Cutting the power triggers the security lock and the unit asks for a password. In most cases you can unlock it without knowing that password.
You bought the car used
The previous owner's password does not matter. The 16-digit code on screen is all you need.
The dealer is closed, or you have no time
No appointment, no visit. The unlock code is issued on the spot.
"ERC is incorrect" on a 68 series unit
The 2018-onward 68 series is supported. If a 68T unit in a hybrid needs a different code, you get one at no extra cost.
The parts that usually go wrong, handled.
Hybrid models needing a different code, mistyped serials, the hassle of a refund. Each one is solved inside the app.
A hybrid code, at no extra cost
If your code does not work on a 68T model, the app issues a hybrid code once, at no extra cost. No form to fill in.
Learn more
Scan the serial with your camera
Point your camera at the navigation screen and the app reads the 16-digit serial. No risk of a typo.
Request a refund
in a few taps.
Apple reviews and processes refunds. We support you from the request through to the result.
- 1 Choose "Request a refund"
Open "Code not working?" on the unlock code screen.
- 2 Pick a reason and submit
Apple's refund screen opens without leaving the app.
- 3 Apple sends the result
The result arrives by email. We answer any questions while you wait.
We respond quickly. We are sorry for the inconvenience.
How a refund works
- 1Tap "Request a refund"
- 2Apple's refund screen opens
- 3Choose a reason and submit
- 4Apple usually processes it within 24–48 hours
- 5Refunded to your original payment method
Why are you requesting a refund?
- I did not mean to buy this
- It did not work as expected
- Other
The code did not unlock the unit.
Apple refund request screen
Supported models
89 model numbers. The 68T series plus a wide range of earlier genuine navigation units. Slide to find yours.
- NSZT-W68T 68 series
- NSZT-Y68T 68 series
- NSZN-Z68T 68 series
- NSCN-W68 68 series
- NSLN-W68 68 series
- NSZT-Y66T Earlier model
- NSZN-Z66T Earlier model
- ND3T-W55 Earlier model
- ND3T-W56 Earlier model
- ND3T-W57 Earlier model
- NDCN-D55 Earlier model
- NDCN-D55/W55 Earlier model
- NDCN-W55 Earlier model
- NDDA-W55 Earlier model
- NDDA-W56 Earlier model
- NDDN-W56 Earlier model
- NDDN-W57 Earlier model
- NDDN-W58 Earlier model
- NH3N-W58 Earlier model
- NH3N-W58G Earlier model
- NH3T-W55 Earlier model
- NH3T-W56 Earlier model
- NH3T-W57 Earlier model
- NHBA-W62G Earlier model
- NHBA-X62G Earlier model
- NHDA-W57G Earlier model
- NHDA-W61G Earlier model
- NHDN-W55G Earlier model
- NHDN-W56 Earlier model
- NHDN-W56G Earlier model
- NHDP-W56S Earlier model
- NHDP-W57S Earlier model
- NHDT-W55 Earlier model
- NHDT-W57 Earlier model
- NHDT-W57D Earlier model
- NHDT-W58 Earlier model
- NHDT-W58G Earlier model
- NHDT-W59 Earlier model
- NHDT-W59G Earlier model
- NHDT-W60G Earlier model
- NHXT-W55V Earlier model
- NHXT-W56D Earlier model
- NHZA-W58G Earlier model
- NHZA-W59G Earlier model
- NHZA-W60G Earlier model
- NHZA-W61G Earlier model
- NHZD-W62G Earlier model
- NSZT-W68T 68 series
- NSZT-Y68T 68 series
- NSZN-Z68T 68 series
- NSCN-W68 68 series
- NSLN-W68 68 series
- NSZT-Y66T Earlier model
- NSZN-Z66T Earlier model
- ND3T-W55 Earlier model
- ND3T-W56 Earlier model
- ND3T-W57 Earlier model
- NDCN-D55 Earlier model
- NDCN-D55/W55 Earlier model
- NDCN-W55 Earlier model
- NDDA-W55 Earlier model
- NDDA-W56 Earlier model
- NDDN-W56 Earlier model
- NDDN-W57 Earlier model
- NDDN-W58 Earlier model
- NH3N-W58 Earlier model
- NH3N-W58G Earlier model
- NH3T-W55 Earlier model
- NH3T-W56 Earlier model
- NH3T-W57 Earlier model
- NHBA-W62G Earlier model
- NHBA-X62G Earlier model
- NHDA-W57G Earlier model
- NHDA-W61G Earlier model
- NHDN-W55G Earlier model
- NHDN-W56 Earlier model
- NHDN-W56G Earlier model
- NHDP-W56S Earlier model
- NHDP-W57S Earlier model
- NHDT-W55 Earlier model
- NHDT-W57 Earlier model
- NHDT-W57D Earlier model
- NHDT-W58 Earlier model
- NHDT-W58G Earlier model
- NHDT-W59 Earlier model
- NHDT-W59G Earlier model
- NHDT-W60G Earlier model
- NHXT-W55V Earlier model
- NHXT-W56D Earlier model
- NHZA-W58G Earlier model
- NHZA-W59G Earlier model
- NHZA-W60G Earlier model
- NHZA-W61G Earlier model
- NHZD-W62G Earlier model
- NHZN-W57 Earlier model
- NHZN-W58 Earlier model
- NHZN-W59C Earlier model
- NHZN-W59G Earlier model
- NHZN-W60G Earlier model
- NHZN-W61 Earlier model
- NHZN-W61G Earlier model
- NHZN-X61G Earlier model
- NHZN-X62G Earlier model
- NHZP-W58S Earlier model
- NHZT-W58 Earlier model
- NHZT-W58G Earlier model
- NMCN-D51 Earlier model
- NMCN-W51M Earlier model
- NMCT-D51 Earlier model
- NMCT-W51 Earlier model
- NSCN-W59C Earlier model
- NSCN-W60 Earlier model
- NSCP-W61 Earlier model
- NSCP-W62 Earlier model
- NSCP-W64 Earlier model
- NSCT-D61D Earlier model
- NSCT-W61 Earlier model
- NSDD-W61 Earlier model
- NSDN-W59 Earlier model
- NSDN-W60 Earlier model
- NSDT-W59 Earlier model
- NSLN-W62 Earlier model
- NSZA-X64T Earlier model
- NSZD-W60 Earlier model
- NSZN-W64T Earlier model
- NSZT-W60 Earlier model
- NSZT-W61G Earlier model
- NSZT-W62G Earlier model
- NSZT-W64 Earlier model
- NSZT-Y62G Earlier model
- NSZT-Y64T Earlier model
- NSZT-YA4T Earlier model
- NSZT-W66T Earlier model
- NSCD-W66 Earlier model
- DSZT-YC4T Earlier model
- W60G Earlier model
- NHZN-W57 Earlier model
- NHZN-W58 Earlier model
- NHZN-W59C Earlier model
- NHZN-W59G Earlier model
- NHZN-W60G Earlier model
- NHZN-W61 Earlier model
- NHZN-W61G Earlier model
- NHZN-X61G Earlier model
- NHZN-X62G Earlier model
- NHZP-W58S Earlier model
- NHZT-W58 Earlier model
- NHZT-W58G Earlier model
- NMCN-D51 Earlier model
- NMCN-W51M Earlier model
- NMCT-D51 Earlier model
- NMCT-W51 Earlier model
- NSCN-W59C Earlier model
- NSCN-W60 Earlier model
- NSCP-W61 Earlier model
- NSCP-W62 Earlier model
- NSCP-W64 Earlier model
- NSCT-D61D Earlier model
- NSCT-W61 Earlier model
- NSDD-W61 Earlier model
- NSDN-W59 Earlier model
- NSDN-W60 Earlier model
- NSDT-W59 Earlier model
- NSLN-W62 Earlier model
- NSZA-X64T Earlier model
- NSZD-W60 Earlier model
- NSZN-W64T Earlier model
- NSZT-W60 Earlier model
- NSZT-W61G Earlier model
- NSZT-W62G Earlier model
- NSZT-W64 Earlier model
- NSZT-Y62G Earlier model
- NSZT-Y64T Earlier model
- NSZT-YA4T Earlier model
- NSZT-W66T Earlier model
- NSCD-W66 Earlier model
- DSZT-YC4T Earlier model
- W60G Earlier model
You can search by model number inside the app
Pricing
One payment per unit. No subscription.
¥3,000 (tax included)
NSZT-W68T, NSZT-Y68T, NSZN-Z68T, NSCN-W68, NSLN-W68
68T units: hybrid code at no extra cost if needed
¥1,380 (tax included)
NSZT-Y66T, NSZN-Z66T and others
See the full list below
Unlock your navigation system today.
The app is free to download. You pay only when you get a code.