Volvo V40 Radio Code — Unlock It Online
Your Volvo V40 radio is displaying a code prompt or a lock icon after a battery change, repair, or flat battery? This is the Volvo anti-theft system at work. The HU-series or Sensus Connect head unit locks whenever power is interrupted, and to unlock it you need a four-digit code matched to the unit's serial number. This guide covers both V40 generations — the original P1 estate (1995–2004) and the modern V40 II hatchback (2012–2019).
Why Does the Volvo V40 Radio Lock?
Volvo has used radio security codes since the late 1990s. All V40 head units — whether a Clarion or Philips HU-403/HU-613 in the first generation, or a Harman/Denso HU-650/HU-850/Sensus Connect in the second — detect a loss of battery power and activate the immobiliser. The radio becomes inoperable until the correct code is entered. This prevents a stolen unit from being used in another vehicle.
Finding the Serial Number on a Volvo V40
The serial number is printed on a white sticker on the body of the head unit. Depending on the generation, you may or may not need to remove the radio to find it:
- V40 I (1995–2004, HU-403 / HU-613): The unit is mounted in the centre console and may require partial removal of the surrounding plastic trim to slide it out. Use a plastic pry tool to ease away the trim surround, then unscrew and pull the unit forward far enough to read the label on its side or top.
- V40 II (2012–2019, HU-650 / HU-850 / Sensus Connect): On many V40 II models you can navigate to Settings → System Information via the Sensus Connect touchscreen to find the head unit serial without physical removal. Alternatively, use trim removal tools to access the unit's physical label.
Once you have the serial, order your Volvo V40 radio code here and receive it by e-mail within minutes.
How to Get Your Volvo V40 Radio Code
- Locate the head unit's serial number via the Sensus menu or the physical label.
- Go to MyRenaultRadioCode.com and enter the serial and your e-mail address on the order form.
- Complete secure payment; your four-digit unlock code is e-mailed immediately.
- Enter the code using the method matching your V40 generation.
How to Enter the Radio Code on a Volvo V40
- V40 I (HU-403 / HU-613, Clarion/Philips OEM): With ignition in position II, the head unit prompts for a code. Use the station preset buttons (1–4) to enter each digit, then press the OK or Seek button to confirm and move to the next position. After the fourth digit, confirm to unlock.
- V40 II (HU-650 / HU-850 / Sensus Connect, Harman/Denso OEM): A touchscreen keypad appears when the unit requests a code after power loss. Tap each digit on the touchscreen, then tap OK or Enter to submit the four-digit code.
Volvo V40 Generations: Radio, Manufacturer, and Entry Method
| Generation | Years | Head Unit | OEM Manufacturer | Entry Method |
|---|---|---|---|---|
| V40 I (P1 estate) | 1995–2004 | HU-403 / HU-613 | Clarion / Philips | Preset buttons 1–4 + OK/Seek |
| V40 II (hatchback) | 2012–2019 | HU-650 / HU-850 / Sensus Connect | Harman / Denso | Touchscreen |
Troubleshooting Volvo V40 Radio Issues
- Code prompt or lock icon after battery change: This is entirely normal. Switch on the ignition (position II) and wait up to 30 seconds for the code entry screen to appear, then enter your four-digit code.
- Touchscreen does not respond: On V40 II models with Sensus Connect, give the unit 60 seconds to fully boot after battery reconnection before expecting the code prompt. A cold boot can take longer than on older button-based units.
- Wrong code entered: Volvo units may impose a short delay after an incorrect entry. Do not repeatedly guess — retrieve the correct code first and enter it once.
- V40 II with Sensus Connect 2.0 (2017–2019): The latest Sensus generation on very late V40 II models may use an account-linked unlock rather than a standalone serial code. If you are prompted to log in to a Volvo On Call or Sensus Connected account rather than a numeric PIN, contact Volvo customer services. Most V40 II owners will see a standard numeric code prompt.
Frequently Asked Questions
How do I find the serial number on a Volvo V40 II radio?
On V40 II models with Sensus Connect, navigate to Settings → System Information on the touchscreen — the head unit's serial is listed there. If you cannot access the menu, use a plastic trim removal tool to carefully slide the unit out from the centre stack and read the white sticker on the side or top of the unit casing.
My Volvo V40 II shows a code request — how do I enter it?
Tap the on-screen numeric keypad that appears on the Sensus Connect touchscreen. Enter each of the four digits from your unlock code, then tap OK or Enter to confirm. The radio should unlock immediately if the correct code is entered.
How long does it take to get a Volvo V40 radio code online?
Once you submit the serial number and complete payment on MyRenaultRadioCode.com, the code is delivered by e-mail within minutes. Most V40 owners are back listening to the radio within 15 minutes from start to finish.
Is there a way to find the V40 I radio serial without removing the unit?
On some V40 I models with the HU-613 unit there is no on-screen serial display — physical removal is typically required. Use a plastic trim pry tool to remove the surrounding centre console trim panel, then unscrew the unit and pull it forward to access the label. The serial on HU-series units is not retrievable via a button combination.
Can I order a Volvo V40 radio code if I don't have the original documentation?
Yes. You only need the head unit's serial number — no paperwork, no dealer visit. Find the serial using the Sensus menu or the physical label on the unit, then order online. Get your Volvo V40 code here and unlock your radio in minutes.