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HOWTO: Circumvent VADIS expiration date

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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PiRX
Posts: 1
Joined: 30 December 2022
Year and Model: '96 850 T5-2.0
Location: Latvia
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HOWTO: Circumvent VADIS expiration date

Post by PiRX »

Hi all!

We all know, that one of most annoying things about VADIS is it's hard-coded (maybe not that hard-coded) expiration date.

Yesterday I got a bit fed-up with it (because of how annoying it is to make VirtualBox to NOT keep correct clock on guest system), and decided to do a bit of spelunking in VADIS.exe with Ghidra.

To my surprise it was simpler than I expected, because I found that VADIS has functionality to disable it through configuration setting in Windows registry (I guess for testing purpose or whatever).

So, here is a reg file for disabling it (used on 64 bit-windows 7 virtual machine)
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Volvo\VADIS\Bucket\ExpirationChecking]
"EnableExpirationCheck"="0"
For non-tech persons - just save it as something.reg file and double click on it.

I think that for 32-bit you just need to remove the "\Wow6432Node" part from it, but I haven't tested it.

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