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VW RNS 310 and RNS 315 radio code: how to find and enter it

Updated · 3 min read

The RNS 310 and RNS 315 are Volkswagen's compact touchscreen sat nav radios. Both lock after a power cut and ask for a 4-digit code.

Is this your radio?

They have a smaller touchscreen with navigation and usually "RNS 310" or "RNS 315" printed on the front.

Commonly fitted to Golf Mk6, Polo 6R, Passat B7, Caddy, Touran and Tiguan Mk1. Exact fitment varies by year and trim.

If your car has a newer touchscreen system (for example a Golf Mk7, Audi A3 8V, Octavia Mk3 or Leon Mk3) and it says "Component Protection" rather than SAFE, it's a MIB unit with no 4-digit code. See why MIB radios have no code.

Step 1: find the VWZ serial

The code is tied to the radio's serial number, printed on a label on the radio's casing. It's 14 characters and starts with VWZ, for example VWZ1Z2A1234567. Don't use the part number, which starts with digits.

To read it, slide the radio out of the dash. Most units come out with radio release keys; some are held by Torx T20 screws behind a trim panel. There's no need to unplug it. More detail: where to find your radio serial number.

Step 2: get the code

First check the service book wallet for a radio code card whose serial matches your radio. If there isn't one, you can order the code from the serial: £19.99, delivered by email in 1–3 hours on average.

Need your VW RNS 310 and RNS 315 code? Original 4-digit code from your VWZ serial: £19.99, 1–3 hours on average, money-back guarantee.

Get my code

Step 3: enter the code

  1. Switch the ignition on and let the unit start up fully.
  2. An on-screen keypad appears, usually with "Enter code" or a padlock prompt.
  3. Tap the four digits, check them on the display, then press OK.

Keep the engine running or a battery charger connected, so the unit doesn't power down halfway through entry.

Two wrong entries usually lock the radio into SAFE 2 for 60 minutes. If that happens, leave the ignition and radio on for an unbroken hour, then enter the correct code once. See how the SAFE 2 lockout works.

Quick answers

Where is the serial number on a VW RNS 310 and RNS 315 radio?

On a label on the radio's casing, usually the top or side. It is 14 characters long and starts with VWZ. You normally need to slide the radio out to read it.

How much is a VW RNS 310 and RNS 315 radio code?

£19.99 from RadioUnlock, fixed price, delivered by email in 1–3 hours on average, with a money-back guarantee if the code doesn't work.

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