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CEM programmed to car or car to CEM??

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850TurboTurtle
Posts: 289
Joined: 02 Aug 2011, 21:52
Year and Model: 96 850T, 05 S80T6
Location: Tacoma WA
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Post by 850TurboTurtle »

Our car probably needs a new CEM. Do they program the central electronics module so it matches the components in the car or all the components to match the new CEM?

Why? Just curious if I keep the old one, whose status is uncertain, can it work as a swappable backup?

2004 xc90 5 cyl

dikidera
Posts: 1346
Joined: 15 Aug 2022, 09:59
Year and Model: S60 2005
Location: Galaxy far far away
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Post by dikidera »

CEM to rest when it is such swap. Always keep old one, as spare, as source of truth(immo codes etc)

scot850
Posts: 15482
Joined: 05 Apr 2010, 14:46
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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Post by scot850 »

Just had Xemodex clone the original in an 05 V70 when it failed due to corroded pins on the 'C' connector on the top.

Seemless and Xemodex sent a shipping label and returned the new cloned item in 2 days.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

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