Peugeot 308 Radio Code — Unlock It Online

Your Peugeot 308 has gone silent and the display is asking for a code. This is the standard anti-theft response from Peugeot's OEM head unit after a power interruption — completely normal, and entirely fixable. Whether you have a 308 I fitted with an RD4 or RD45, or a 308 II or II facelift with a more modern touchscreen unit, this guide walks you through finding your serial number, retrieving the code online, and entering it correctly.

Why the Peugeot 308 Radio Locks

Like all modern OEM radios, the 308's head unit stores a lock state in non-volatile memory. Any interruption to the 12V supply — a new battery, a disconnected terminal during servicing, or even a fuse replacement — triggers the lock. The unit will not play until the correct 4-digit code is entered. This is a deliberate security feature: a 308 radio without its code has no resale value to a thief.

The 308 I (2007–2011) was most commonly fitted with the RD4 or RD45 head unit, made by Philips/VDO. These use a physical button entry method and allow up to 10 attempts before a temporary lockout. Later 308 II and II facelift models moved to newer Bosch/Clarion-sourced units with touchscreen interfaces.

Finding Your Peugeot 308 Radio Serial Number

Peugeot uses a C7 barcode serial number system. There are two ways to find yours:

1. Button combination: With the radio switched off, press and hold preset buttons 1 and 4 together. On some 308 models — particularly those with RD4/RD45 units — the serial number scrolls across the display. On the 308 II with a touchscreen, try the source and list buttons together, or navigate to the radio's service menu.
2. C7 barcode label: Use DIN extraction keys to release the head unit from the dashboard. The serial number is on a white C7 barcode sticker on the casing. Note the full number exactly as shown.

With your serial number in hand, visit our Peugeot code lookup page to place your order.

Retrieving Your Code

Submit your serial at radiocodelookup.com. We cover all 308 generations: 308 I (2007–2011), 308 I facelift (2011–2013), 308 II (2013–2017), and 308 II facelift (2017–2021). The correct 4-digit code for your specific unit is emailed to you promptly.

Entering the Code on a Peugeot 308

The method differs slightly between the RD4/RD45 button-based units and the later touchscreen models:

1. Switch ignition to position I (accessories on).
2. Turn on the radio. CODE appears on the display.
3. RD4 / RD45 (308 I): Use preset buttons 1, 2, 3 and 4 to cycle each digit to the correct number. Press and hold the 5 or OK/confirm button to enter the code.
4. Touchscreen (308 II / facelift): A numeric keypad appears. Tap each digit in sequence, then confirm with OK or Validate.
5. The radio unlocks immediately and returns to normal function.

308 Generations and Radio Overview

Generation	Years	Head Unit	Manufacturer	Max Attempts
308 I	2007–2011	RD4 / RD45	Philips/VDO	10
308 I facelift	2011–2013	RD4 / RD45 / RCC	Philips/VDO / Bosch	10
308 II	2013–2017	RCC / RT6 Touchscreen	Bosch/Clarion	10
308 II facelift	2017–2021	RCC / RT6 Touchscreen	Bosch/Clarion	10

Troubleshooting Error Messages

• CODE — Standard locked state; enter your 4-digit code.
• ERR — Wrong code entered. Remaining attempts may be shown.
• WAIT or SAFE — Temporary lockout after too many failed entries. Leave ignition in position I for at least one hour before retrying.
• Display blank after reset — Some 308 units need up to 30 seconds to display CODE after power restoration. Wait briefly before trying to enter the code.

Frequently Asked Questions

What is the difference between the RD4 and RD45 in the Peugeot 308 I?

The RD4 is Peugeot's CD/radio head unit manufactured by Philips/VDO and fitted to the 308 I from launch in 2007. The RD45 is an updated variant with minor interface improvements, appearing in later 308 I models and the 308 I facelift. Both use the same C7 barcode serial system and the same code entry method (preset buttons 1–4 plus confirm). The unlock procedure is identical for both.

My Peugeot 308 shows WAIT — how long must I wait?

After 10 incorrect code attempts on RD4/RD45 and RCC units, the 308 radio enters a temporary lockout and displays WAIT. You must leave the ignition in the accessories position (position I) for a full hour. After that, the display reverts to CODE and you can try again. Make absolutely certain you have the right code before your next attempt to avoid resetting the wait timer.

Can I find the Peugeot 308 radio serial without removing the unit?

On many 308 models — particularly those with RD4 and RD45 head units — pressing and holding preset buttons 1 and 4 with the radio switched off will display the serial number. This avoids the need for extraction tools. For 308 II touchscreen units, the serial may be accessible through the radio's settings or service menu before the vehicle is fully unlocked.

Does the 308 II use a different code format to the 308 I?

Both generations use a 4-digit code, but the underlying head unit changed from Philips/VDO (308 I) to Bosch/Clarion (308 II). The code retrieval process at radiocodelookup.com handles both automatically based on the serial number you submit — you do not need to specify the generation manually.

Get your Peugeot 308 radio unlocked today. Enter your serial number on our Peugeot code page and receive your 4-digit unlock code by email in just a few minutes.