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Vida CEM swapping

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
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vtl
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Year and Model: 2005 XC70
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Re: Vida CEM swapping

Post by vtl »

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vfred748
Posts: 7
Joined: 21 January 2026
Year and Model: S60 2006
Location: Jarny

Post by vfred748 »

vtl wrote: 22 Jan 2026, 09:49
vfred748 wrote: 22 Jan 2026, 09:26
vtl wrote: 21 Jan 2026, 14:34
No way it can't work on the bench. I spent long months with CEM-L on the bench, hundreds of runs.
So i will make it on car, thanks for the advice. 👍
I said it works on the bench. I ran it once, maybe twice on a real car :) Remove autodetect line, compile/upload, wait for the message, power up the CEM quickly.
Hi,

I've tried several times, no result. I put in the car tomorrow.

Thank you

vtl
Posts: 4723
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Post by vtl »

vfred748 wrote: 22 Jan 2026, 14:12 I've tried several times, no result. I put in the car tomorrow.
Show us how you connected Teensy to your CEM. Could be a bad wiring.

swital
Posts: 4
Joined: 10 August 2016
Year and Model: 84-00' 245-V70
Location: Plock

Post by swital »

Is there another option for changing the CEM configuration other than vdash? I need to make changes to several of my cars (heated seats and BLIS in P1, auxiliary heater in P2). For P3 I use p3tool - pay once and change whatever I want. Unfortunately, vdash requires a fee each time.
245 USA, 2x 744 USA, 440, 2x 480, 945, 850 T-5R, V70

vtl
Posts: 4723
Joined: 16 August 2012
Year and Model: 2005 XC70
Location: Boston
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Post by vtl »

swital wrote: 22 Jan 2026, 16:11 Is there another option for changing the CEM configuration other than vdash? I need to make changes to several of my cars (heated seats and BLIS in P1, auxiliary heater in P2). For P3 I use p3tool - pay once and change whatever I want. Unfortunately, vdash requires a fee each time.
http://www.openmoose.net ?

I haven't tried it yet

swital
Posts: 4
Joined: 10 August 2016
Year and Model: 84-00' 245-V70
Location: Plock

Post by swital »

vtl wrote: 22 Jan 2026, 16:15 http://www.openmoose.net ?

I haven't tried it yet
I heard about it, but it's only for P2
245 USA, 2x 744 USA, 440, 2x 480, 945, 850 T-5R, V70

vtl
Posts: 4723
Joined: 16 August 2012
Year and Model: 2005 XC70
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Post by vtl »

swital wrote: 22 Jan 2026, 16:16 I heard about it, but it's only for P2
The best Volvo, you don't need any other, right? =)

gavik
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Year and Model: 2006 xc90
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Post by gavik »

swital wrote: 22 Jan 2026, 16:16
vtl wrote: 22 Jan 2026, 16:15 http://www.openmoose.net ?

I haven't tried it yet
I heard about it, but it's only for P2
There's also Volvo TechNest, but the price might not be right for you.

Dudde
Posts: 64
Joined: 22 January 2020
Year and Model: 2005 V70 and more
Location: Finland
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Post by Dudde »

swital wrote: 22 Jan 2026, 16:11 Is there another option for changing the CEM configuration other than vdash? I need to make changes to several of my cars (heated seats and BLIS in P1, auxiliary heater in P2). For P3 I use p3tool - pay once and change whatever I want. Unfortunately, vdash requires a fee each time.
I made a software to load the flash files from CEM and edit the config, it's not finished for release yet but works.

Treur
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Post by Treur »

gavik wrote: 22 Jan 2026, 22:20
swital wrote: 22 Jan 2026, 16:16
vtl wrote: 22 Jan 2026, 16:15 http://www.openmoose.net ?

I haven't tried it yet
I heard about it, but it's only for P2
There's also Volvo TechNest, but the price might not be right for you.
Well, if 150€ annually is too expensive, then the only option is to write the codes with a pencil.

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