Mixpower

Hi,


I need to replace the Auxiliary water pump on my SL,
but can anyone tell me where the bloody thing is?


I have looked in at the whole engine bay and searched the net,
but i can't figure out where this thing is!


Any help would really be appreciated!


Thanks!

mercy-me

Right front, reached from underneath. See attachement.

Why do you need to replace it?

Bob

Mixpower

Nice, thanks for that pdf!
So can I just remove the wheel and the inner liner or can I reach it from underneath the car?
It's a little unclear from the picture!


My pump is dead, also tested it with Xentry it's doing nothing.

mercy-me

Yes, must remove underbody paneling for access, step #3. I re-read the instructions and no mention of removing the wheel and inner fender lining ??

Good luck,

Bob

Mixpower

Great thanks!
No I know, but maybe there was an easier way


Thanks for the help!

moretech

whoa fellows! Tell me about this pump and it's purpose?! Does the main water pump not make the heater work? I tell you I am learning more stuff every day about how this car functions and its complexity.
moretech

Blaz

Hello.
Yes, guys check this pump, if not yet.
It's suppose to help cycling coolant around, to get warmer air as fast as possible into the cabin and used for heated water windscreen and after shuttin down the engine it could run for a couple of minuts to ''ease up'' hot engine....
This is mine picture from today, DOT 2005...

Tom Manning

How did you know it was faulty? Error message?

I suppose we could just run power to it and see if it runs.

Another one of its functions is to run when you press the 'rest' button, thus circulating hot coolant through the system and giving hot air through the vents when the engine is stopped.

Blaz

Hi.

Been working on those engines for a couple of years,
brushless pumps are no issues, those are.

Rest function should be working and pump should be humming, if you put your hand on.

And also turning the engine off, this pump help cooling heater core, depending on how hot is the temperature...

Tom Manning

I'm going to test mine. Got a feeling it's not working.

Thanks

Frederick NL

Apparently it also kicks in when the coolant temp rises in heavy slow traffic.

Frederick NL

In the 'rest' mode, you can just manage to put a stick on the pump housing from above and put your ear to it. Worked for me (bzzzzz).

Gene Fiorot

What is the rest mode? Feeling dumb

Tom Manning

I'll get the stethoscope out.

You have a button on the console 'rest'. This allows you to park with the engine off and retain the internal temperature setting, whether hot or cold. Think I've used it once in 7 years, when I was trying to impress a girl. She wasn't impressed.

Blaz

Solved, changed cable connector and installed one spare of CLS 55...

g0rsq

Got mine to change also. No warnings, but flagged up on a routine scan with Xentry. Checked physically, and sure enough not running.

Blaz

Exactly.
If it's running, I'm feeling good.