Battery bypass

Rex7 · Feb 16th, 2022, 09:32

hi All Newbi here I cannot get my radio code from volvo because they said they could not find it on the system which I find strange

, I have heard about making a connector you can put on with a small 9v battery MN1604 and you connect it to your main battery pos & neg so you can keep the code on your radio etc then you can disconnect your main battery from the vehicle, any ideas how they are made
cheers in advance

stuart bowes · Feb 16th, 2022, 10:10

what radio have you got?

It was my understanding there is no coding system that is affected by disconnecting batteries

a lot of volvo modules are hard-coded into the system by the dealership as a method of undermining thieves and chop shops

Im sure that can be confirmed or denied by others before you disconnect

Rex7 · Feb 16th, 2022, 11:27

cheers for the reply Stuart
it is a Volvo HU-801

chunky2778 · Feb 16th, 2022, 12:35

Quote:

Originally Posted by Rex7

hi All Newbi here I cannot get my radio code from volvo because they said they could not find it on the system which I find strange

, I have heard about making a connector you can put on with a small 9v battery MN1604 and you connect it to your main battery pos & neg so you can keep the code on your radio etc then you can disconnect your main battery from the vehicle, any ideas how they are made
cheers in advance

You can buy a battery code saver off eBay or similar, I had one years ago that just plugs into the cigarette lighter but it seems things have moved on and now there are EOBD ones too.

I've disconnected my battery multiple times on my V70 though with a HU-850 and never had a problem with it working again after.

Darlo 1 · Feb 16th, 2022, 13:57

Quote:

Originally Posted by Rex7

hi All Newbi here I cannot get my radio code from volvo because they said they could not find it on the system which I find strange

, I have heard about making a connector you can put on with a small 9v battery MN1604 and you connect it to your main battery pos & neg so you can keep the code on your radio etc then you can disconnect your main battery from the vehicle, any ideas how they are made
cheers in advance

These radios don't actually have a code to input, they are linked to the car by its canbus system.

Rex7 · Feb 16th, 2022, 14:01

Cheers for the info Suart, Chunky and Darlo 1 and your quick response it is much appreciated

barrybritcher · Feb 16th, 2022, 19:31

never heard of 801 on p2, is it a tape deck?

Rex7 · Feb 16th, 2022, 20:18

No Barry it is a cd player

Feb 16th, 2022, 09:32	#1
Rex7 Junior Member Last Online: Mar 17th, 2023 10:22 Join Date: Feb 2022 Location: Wirral	Battery bypass hi All Newbi here I cannot get my radio code from volvo because they said they could not find it on the system which I find strange , I have heard about making a connector you can put on with a small 9v battery MN1604 and you connect it to your main battery pos & neg so you can keep the code on your radio etc then you can disconnect your main battery from the vehicle, any ideas how they are made cheers in advance

Feb 16th, 2022, 10:10	#2
stuart bowes trying to be helpful Last Online: Today 01:03 Join Date: Aug 2020 Location: Dagenham	what radio have you got? It was my understanding there is no coding system that is affected by disconnecting batteries a lot of volvo modules are hard-coded into the system by the dealership as a method of undermining thieves and chop shops Im sure that can be confirmed or denied by others before you disconnect __________________ V70 '01 auto petrol 2.4 (140) 70k ------------------------- mini project - link

Feb 16th, 2022, 19:31	#7
barrybritcher Flaccid Member Last Online: Apr 15th, 2024 16:09 Join Date: Nov 2016 Location: Norwich	never heard of 801 on p2, is it a tape deck? __________________ 2001 Volvo S60 T5 SE 2.3 Geartronic (Scrapped) 2007 Volvo S60 T5 SE 2.4 Geartronic (Sold) 2008 Volvo V70 D5 SE Sport Geartronic (Current)

Feb 16th, 2022, 11:27	#3
Rex7 Junior Member Last Online: Mar 17th, 2023 10:22 Join Date: Feb 2022 Location: Wirral	cheers for the reply Stuart it is a Volvo HU-801

Feb 16th, 2022, 14:01	#6
Rex7 Junior Member Last Online: Mar 17th, 2023 10:22 Join Date: Feb 2022 Location: Wirral	Cheers for the info Suart, Chunky and Darlo 1 and your quick response it is much appreciated

Feb 16th, 2022, 20:18	#8
Rex7 Junior Member Last Online: Mar 17th, 2023 10:22 Join Date: Feb 2022 Location: Wirral	No Barry it is a cd player

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