Mine: sqrt(37625956)
Keep your Volvo's Radio Code Here
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hotchalupa
- Posts: 5
- Joined: 25 November 2013
- Year and Model: 1999 S70 T5
- Location: Seattle, WA, US
Re: Keep your Volvo's Radio Code Here
Got mine from the volvocars.com Radio Code Request tool, instantly (and free)! I was glad to not have to wait for a callback or email.
Mine: sqrt(37625956)

Mine: sqrt(37625956)
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originalhepcat
- Posts: 1
- Joined: 25 January 2015
- Year and Model: 1990 850
- Location: United States
6331 is printed on the card,but 4244 is written over it in black marker. Which should I try first? What happens when you enter a wrong code? And does it work if the car is running for the 2 hour? Because my battery dies after just a few minutes if I don't start the engine.
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Ozark Lee
- MVS Moderator
- Posts: 14798
- Joined: 7 September 2006
- Year and Model: Many Volvos
- Location: USA Midwest
- Has thanked: 4 times
- Been thanked: 75 times
You get three tries to get the code right. After the third incorrect entry the radio goes from "Code" to "Off". Once in the Off lock mode the 2+ hour constant power is required to get the screen back to code.originalhepcat wrote:6331 is printed on the card,but 4244 is written over it in black marker. Which should I try first? What happens when you enter a wrong code? And does it work if the car is running for the 2 hour? Because my battery dies after just a few minutes if I don't start the engine.
Use the code on the radio first, the code follows the radio, not the car.
...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe
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Homebrand
- Posts: 93
- Joined: 25 July 2015
- Year and Model: 2002 s60 2.4T
- Location: Melbourne, Australia
- Been thanked: 3 times
I have no code!
HU-613 = No code required - I'm thinking it might be "connected/paired" to the car computer.
I pulled it a week ago to change the lights and solder in new LEDS and when I reinstalled it, it worked fine.
HU-613 = No code required - I'm thinking it might be "connected/paired" to the car computer.
I pulled it a week ago to change the lights and solder in new LEDS and when I reinstalled it, it worked fine.






