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V70 II dashboard doesn't show speed, rpm etc.

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
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yagger
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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by yagger » Mon Jun 15, 2020 10:48 am

s3bi wrote:
Sun Jun 14, 2020 8:27 pm
Does anyone know if I can just pull them off?
In your case there are a t least 3 ways:
1. You can try to fix it yourself if you have soldering experience.
2. You can try to find some service which can fix it, which specialized on it.
3. You can buy same DIM from some junkyard. Most likely, DIM from 2004MY will work on your car without some reprogramming stuff...(in worst case it have to be reprogrammed)
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s3bi
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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by s3bi » Wed Jun 17, 2020 7:12 pm

yagger wrote:
Mon Jun 15, 2020 10:48 am
s3bi wrote:
Sun Jun 14, 2020 8:27 pm
Does anyone know if I can just pull them off?
1. You can try to fix it yourself if you have soldering experience.
I would do that if I would get it apart mechanically. I already had to glue three things which I broke after removing the dashboard. Hence I don't want to pull the delicate needles out and break the mechanism.
jonesg wrote:
Sun Jun 14, 2020 10:45 pm
Thats the instrument panel, I think Oragex was talking about the module that resides near your knees when you sit behind the wheel.
you are looking for this,
I tried that but I can't unlock the CEM like he does at 3m45s.
Reaching behind it and pushing it forward doesn't work. I've watched the video several times now but either I'm doing it wrong, the mechanism is different, or I'm not pushing hard enough because I fear to break something.

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by jonesg » Wed Jun 17, 2020 8:54 pm

They always make it look easy in the videos, its not real world, they already removed it and put it back before turning on the camera.
In reality it takes a lot of fighting, band aids and cursing.
You disconnected the battery right?
if not, do so.

otherwise, lie on your back with your head on the brake pedal to get a better view.
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s3bi

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by s3bi » Sun Jun 21, 2020 11:25 am

jonesg wrote:
Wed Jun 17, 2020 8:54 pm
They always make it look easy in the videos, its not real world, they already removed it and put it back before turning on the camera.
In reality it takes a lot of fighting, band aids and cursing.
You disconnected the battery right?
if not, do so.
I always disconnect the battery when I'm working on electrical parts of the car, shorting things out sometimes damages more than the fuse…

I got it out now, there's an additional clip on the left which the video doesn't show. I found it with an endoscope camera. Seems to be a bit different, also the paneling was different to remove than in the video.
Last edited by s3bi on Mon Jun 22, 2020 3:00 pm, edited 1 time in total.

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by jonesg » Sun Jun 21, 2020 1:53 pm

They're odd like that, you can't work on certain parts of the car without a camera phone unless you're familiar with the puzzle.
Try reading the engine serial number from the back of the engine block without a camera , not gonna happen.

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by oragex » Sun Jun 21, 2020 3:12 pm

The 2004-up CEM is pretty bad to remove indeed. Don't forget to seal properly under the cowl if you find where the water is leaking

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by s3bi » Mon Jun 22, 2020 9:49 pm

I can't see any traces of water up to this point. I've removed the relays and the shunts.
open_v70_cem.jpg
Should I remove the CEM further from the housing anyway? The connector also doesn't want to come off like in the video after removing the screw…

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by s3bi » Tue Jun 30, 2020 8:59 pm

oragex wrote:
Sun Jun 21, 2020 3:12 pm
Don't forget to seal properly under the cowl if you find where the water is leaking
Doesn't look like there was any water leaking at all. No signs of corrosion, I also looked inside the holes with a flashlight and the PCB also doesn't show any signs of something that could be wrong. I think I just reassemble it all now and hope it was a loose connector which makes better contact now after I plugged it back in.
CEM_V70.jpg
What held me up was the screw of the connector which didn't want to come out like in the video, so I had to carefully slip it over when removing the connector.

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Re: V70 II dashboard doesn't show speed, rpm etc.

Post by jonesg » Wed Jul 01, 2020 4:36 pm

the xemodex website has a flowchart to determine the symptoms, I would try to follow that.

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