Craig10

First post.

my 2007 s550 needs love.

Looking at the p0606 code along with P2237, P2240.

Anyone have any experience with the P0606? Should i be looking at dropping $1000 for a new cloned PCM?

I have new o2 sensors both down and upstream.

Any input/help is greatly appreciated.

Thank you

BOTUS

all three are generic OBD codes

ur correct in that it seems to suggest the module is fried https://www.obd-codes.com/p0606 I guess worth checking....

they like to fill with oil and self destruct because the cam sensors leak and the gunk flows back up the loom and inside the ECU - meant to have been a recall to fit anti-gunk blockers at the cam sensors - you can pop the ECU apart (tease the cover off with a screwdriver) removing from the car and opening in about 20 mins - then clean it up with contact cleaner

and

there was an engine ECU update in week 9 of 2008 it should have got - clean then try to flash that if still no joy get your money out

Craig10

Thank you very much for the detailed response.

I am going to take the ECU off tomorrow and try not to snap the tabs while opening it up lol.

How do I flash the ECU to that specific year and week update? Can I reset the ECU with my scan tool or the onboard dash?

Thanks again for the help

BOTUS

the ECU comes apart, take out the screws, try contact cleaner and teasing with a screwdriver - heat apparently makes it harder
the engine ECU update you just use dealer tool to update the week will be the same - its just the only one they offer

if you have a decent diagnostic tool - look at ECU data and you may find its on there - it should be if you get an earlier date then its not

Craig10

I got it off. Opening it up wasn't fun. That silicone is brutal.

No visible corrosion but there are some oil looking spots on some of the areas.

I have attached some pictures. I would appreciate your input.

I bought some Electrical Contact Cleaner but of course I missed the fine print that says "don't use on circuit boards or home electronic equipment". It's automotive electrical contact cleaner from canadian tire. Is this safe to use to clean those spots? Do I need to clean those spots or is that normal marking from the factory?

Thanks again

Craig10

At first glance I didn't notice how much white silicone there is. It looks like it melted through from the top. This shouldn't cause shorts.

Thoughts?

BOTUS

its a Bosch ME9.7 in case you didn't know ...found a few things

swap the module
https://mbworld.org/forums/e-class-w...-used-ecm.html

what goes wrong (scroll down)
https://ecudepot.com/product/mercede...ecu-capacitor/

fuel pump not working

BOTUS

the next video on has some good info... capacitor leaked and caused a chip to play up - ever seen this voodoo soldering ?

Craig10

Thank you BOTUS for all the help and input. Your comments gave me the confidence to spend the $$$ on an ebay OEM PCM and go get mine cloned.

I just got it back and into the vehicle last night......

Immediately I could feel it running better just from the gas pedal vibration being gone... After a couple starts...engine fault code cleared. What a beautiful sight... A cleared dashboard.

So far so good!

Craig10

Also...

Dealership PCM replacement: $5500 (Canadian dollars)
Dealership reprogramming cost: No idea as I didn't even bother asking after the above price was given.


Ebay OEM PCM (tested to the best of their ability): $800 (Canadian dollars... that's all in, shipped to my door)
Local dude to clone mine onto the new one: $300

Nothings cheap but still cheaper to keep her.

nath_h

Do you know where they got $5500 for the part?!? Looks like it is 'only' about $2000 from the dealer for an M273. I know dealership sometimes come up with crazy prices, though.

Craig10

I just called the closest MB dealer to me (Kitchener, Ontario)...

Parts desk. OEM PCM for my 2007 s550 W221...$5500 + Programming

I should have called around a little more maybe.

Who knows... Everything in Canada is overpriced now...

BOTUS

N

BOTUS

Never looked up the value of a Canadian dollar before - CAD 5500 = US$ 4000