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Thread: CEM removal P2R

  1. #1
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    CEM removal P2R

    Hi all.

    Has anyone/does anyone know how easy/difficult it is to remove the CEM on a 2004 V70R?

    I know its location but i need to know the extent of the work involved.

    Cheers!
    2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights

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    You got problems with the R Lee? Sorry I have no idea.

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    Here's a brief description with a few pics:

    http://www.matthewsvolvosite.com/for...ic.php?p=51613

    Seems fairly straight forward......hth

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    It's under the scuttle panel on the Facelifts, not sure if that also means 04 R's or not.

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    the scuttle boxes on p2's earlier than 2004 can all suffer from water ingress.

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    Quote Originally Posted by partsforvolvos.com View Post
    the scuttle boxes on p2's earlier than 2004 can all suffer from water ingress.
    Precisely why i think my CEM is being damaged by water and causing me intermittent DRL's faults. Mainly with the FLEX*** settings and the LED on the switch.

    Volvo know there is a fault, they've had it in twice, they just don't know why!!
    2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights

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    The problem is only on a certain number of facelift cars. Your dealer should have checked you chassis already.

    The pre facelift cems were under the dash drivers side AFAIK. Volvo stopped the facelift issue by fitting a rubber grommet in the cem plenum. I guess most cars have had that fix already.

    Anyway mines an early facelift 54 plate and wasn't affected according to Volvo.

    Given your issues it'd be wise to check the connections on the cem for corrosion. On the facelift one there is four different multiplugs for comms canbus etc. And a dual 30 amp feed into it.

    It should be pretty easy to tell by pulling the plugs and checking both sides and the earth etc.

    The CEM is basically the cars server and termination point for networking. A faulty one could definitely be the cause.

    I've got a facelift one here if you need pics

    Quote Originally Posted by LeeT5 View Post
    Precisely why i think my CEM is being damaged by water and causing me intermittent DRL's faults. Mainly with the FLEX*** settings and the LED on the switch.

    Volvo know there is a fault, they've had it in twice, they just don't know why!!
    Last edited by Dream3r; Saturday 5th October 2013 at 10:19.

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    Thanks Dreamer. How easy is it to get to the CEM without removal?

    ie...so i can remove plugs and check for corrosion without physically removing the cem.
    2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights

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    Quote Originally Posted by LeeT5 View Post
    Thanks Dreamer. How easy is it to get to the CEM without removal?

    ie...so i can remove plugs and check for corrosion without physically removing the cem.
    I've no idea mate, I have one I've been playing with on a bench from a facelift, never removed or fitted one.

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    Have a look on Vida that will tell you under the how to repair bit.

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    Lee just found this video

    Volvo Central Electronic Module CEM Removal Proce…:

  12. The Following User Says Thank You to Harvey For This Useful Post:

    LeeT5 (Wednesday 31st December 2014)

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    Wow, only a year late.

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    Quote Originally Posted by stribo View Post
    Wow, only a year late.
    Better late than never...

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    Quote Originally Posted by stribo View Post
    Wow, only a year late.
    I never got round to taking my CEM out last year cod its s big job and the car will be off the road. This video will come in handy in the spring. Thanks Harvey mate ��
    2014 V60 Polestar 6spd Auto :: Polestar map peak boost 17.4psi :: IPD 3" DP + 150cel :: Polestar 2.5" exhaust :: Paddle Shift Geartronic :: Black glass :: Maxton Splitter :: K+N Filter :: IPD Aluminium Top engine mount :: Brembo 6 pots :: 20" Polestar rims :: Brembo 371mm floating discs :: Sensus RTi + DAB + BT + WIFi :: D3S XENARC 6000k Active bending headlights


 

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