ramx111

hi guys, any ideas if the 08 w216 ABC valve block can be rebuilt or should i replace the whole valve block? i have oil and pressure leaking from the longest ones

see attachments if it helps

thanks in advance

this part is leaking from its base

nath_h

I have not looked a lot at these since my system has not yet failed, but this place in Germany rebuilds them...https://abcteile24.de/en/produkt-kat...ntileinheiten/.

At 15 years old, all the parts in your system will soon need replacing, so you might as well do all you can.

ramx111

thank you for the info, and yes at a certain point all parts has to fail some day,

i have discovered also that these valve block doesn't have a manufactural number, so you can't buy them separate from the whole block.

for now i have these information

ChrisHimself

https://www.diybenzrepair.com/shop/a...sic-14pc-4636a

ramx111

Hi Chris,
Thank you but it is not the same block valve, and nobody till now figured out how to separate the blocks from the aluminium part to see inside.

If anyone knows, kindly share some photos
Thank you

ChrisHimself

theyre caps you lift them with a flathead, they're plastic, the solenoids are friction fit inside the block using o-rings, then you replace the gaskets on the caps on the reinstall.

ramx111

i understand and thank for the information about the older version and respectfully i'm aware how to replace the ring
but i have the later version of it and if you closely look at the plastic caps, there is an electric plug coming out from it (i think it connects the 2 block together)
the plastic cap is so fragile and i am concerned that if i try to lift it i might brake it in peaces
i'm just asking to see the blocks and the electrical connections inside so that i'll be careful when lift it, if anyone have ever split it before
requesting some photos

nath_h

Sorry, can't help with photos, but will emphasize that the plastic stuff is REALLY fragile, as you mention. I have found repeatedly on my car that the plastic stuff is just crumbling due to age and temperature cycles. You are right to be concerned. I was going to change my fuel filter, and opened it up to take a look. The connectors and wires looked so fragile that I took it to the dealer to let them do it--better they have to fix it if something broke than me. It oddly cost 1.8 hours of labor, even though ASRA says .8. Not sure why or where the extra hour of labor came from. Regardless, probably took them 10 minutes start to finish.

vobak

Hello,

I have a 2009 w216 cl65 and do not have a leak yet like you did. Did you ever figure out how to rebuild the second gen abc valve body on your car? Were you able to open and separate the plastic cover with the electrical connector? I have a hissing sound on mine internally and I believe that the valve block has internal leak. I replaced accumulator and bleed the system few time via rodeo and cockpit switch raising it up and down 20 times. I don’t have any codes and leaks however.