Finished S60R swapping my P2 XC70...Now the headlights don't work...

Tumbler510 · Post by **Tumbler510** » 30 Aug 2023, 21:15

I swapped the Engine, M66 Trans, BBK, Headlights, front seats, and some other goodies from a 2005 S60R to my 2006 XC70. I got it running, and am reassembling the rest of the car. I brought over the headlights, plugged them in, and neither worked. The turn signals on both are working fine, but low and high beams are not. I have a second set of S60R headlights in the garage I am going to try plug-and-play and see if it fixes it, but if it doesn't...where should I start to look for the root cause?

Extra info:
- Right headlight PNs:30678581, 31446823
- Left headlight PNs: 30678580, 30698823

Post by **abscate** » 31 Aug 2023, 00:41

Everything is CANBUS module controlled on P2 so it’s not the same as troubleshooting an analogue car

I would fire up VIDA and see how the Bus is talking to the LSM module, aka light switch

Post by **vtl** » 31 Aug 2023, 10:03

Need to change headlights configuration in CEM. Going from halogen to xenon or backwards is not gonna work without reprogramming CEM.

Build Break and Beyond?

Tumbler510 · Post by **Tumbler510** » 31 Aug 2023, 11:26

vtl wrote: ↑31 Aug 2023, 10:03 Need to change headlights configuration in CEM. Going from halogen to xenon or backwards is not gonna work without reprogramming CEM.

Build Break and Beyond?

lol Yup. Waiting for the CEM cracker to get sent to me so I can run it for a day and finish the swap.

crazycat · Post by **crazycat** » 14 Nov 2023, 19:21

I want to do this to my 2002 v70xc. Or possibly get a ‘04 xc90 t6 to do it to that. I was under the impression ’05 and ‘06 and up were much more difficult, thank ‘04 and older? Could a CEM DIM and ECM with keys allow you to transplant your R brains to your xc70?

Post by **vtl** » 16 Nov 2023, 05:56

From what I've heard, a 2.3 block that can be found in V70 T5 is much stronger and has more tuning potential. You can essentially keep everything but the engine and just reflash it into V70 T5.

Even the stock engine is much more pleasurable to drive if tuned properly. The stock maps are sort of lazy dogs. I have no desire to go over Hilton stage 1 and 3" downpipe I currently have: the car drives fantastic, very linear response to the pedal, has enough power and gets compliments from Mustang and BMW M3 owners. I had an XC60 T5 with 250 HP inline-5 and didn't like how it drove. Lethargic as is, overly punchy in sport mode. My tuned XC70 is a precise machinery: every second you know exactly what it does and what it will be doing next. Distilled pleasure.

dikidera · Post by **dikidera** » 16 Nov 2023, 23:15

Are you referring to v70 specifically? Because from my understanding any 2.3 block will be a beast , as well as 2.4T5 the one at 256hp. Those have 81mm bores and have 2mm thicker cylinder walls. It's still good practice to shim them too and then 600hp is not unreasonable to be handled provided you have forged pistons and rods

Over at drive2.ru there was a guy doing 400hp on a stock c70 2.3t.

Post by **vtl** » 17 Nov 2023, 04:44

Do not shim them.They are there for sleeves' thermal expansion. Without slots the sleeves will expand upwards and lift the head. You can actually find sleeves cut into the head through MLS gasket in stock configuration, with the shims it will be much worse.

dikidera · Post by **dikidera** » 17 Nov 2023, 09:10

Here is the build log

https://www.swedespeed.com/threads/volv ... st.562977/

https://www.swedespeed.com/threads/dougys-s60r.159820/

The shims do move but no reports of liners popping up. https://www.swedespeed.com/threads/shim ... ck.238406/

As far as I know, dougy is the only person ever to reach over 600hp on a S60 with an automatic gearbox. To my knowledge at least and he has built quite a few of them.

And most 2.4t with 83mm survive the shims from the reports I have.