jett3jett

I just got home parked in my driveway and turned my s550 off, started heading to my door as i noticed a sound coming from my car. Definitely a motor running but i can't seem to understand this one. 39k miles on the speedo. Any Techs out there? Any help would be greatly appreciated. Thanks in advance

Posted a clip so you can see for yourself. there must be an explanation

WTF

http://www.youtube.com/watch?v=zMZl2...outu.be&fmt=18

CarolPoppy

Yeah its motor running sound,after having a look on a Video,Even I am confuse how to stop It,you should take it to the garage.

jett3jett

Hopefully that was just a fan cooling down the motor but it wasn't visible to the eye. Seemed to stop now.

604benz

Sounds like your airmatic pump is staying on, check the relay it may be bad.
I had the same problem on my W220.

jett3jett

At first i was thinking it was pump related so i raised the vehicle for a minute circled the block then lowered it but when i turned the car off the sound continued. After a good 20 minute give/take wait now it has stopped or just gotten really quiet

MBhelper

This is easy. It is the secondary airpump that runs because your relay is broken. It is a cheap and easy swap. The only concern is that the pump can take damage also and that is expensive though. Change the releay and see if the pump works. If not I have one used layning around to help you out a bit cheaper. it is NOT airsupsension like in the link to ebay.

MBhelper

It is located here:



Just take of the plastic cover and unplug the conector so the pump dont get damaged. You can still drive the car without any problems at all. You just get a worse exhaust cleaning. Put in the new relay and contect the pump again. Did this on mine and it is a VERY known and comon problem.

Tobby

MBH, you say it's not the airsuspension. What is the secondary airpump doing then? Just curious, learning all the time

Quadcammer

SAI is typically used right after start up to force more air into the exhaust to heat up the catalytic converters faster.

jett3jett

what do you guys suggest i do? car is sitting in my driveway since last night and is not making any unusual noise now. Im planning to meet up with AMG northeast on saturday at my MB service center so I'm gonna try to cling on for dear life and pray i make it okay until saturday when a tech can look under my hood.
Chris thank you for chiming in you always seem to save the day one way or another.

MBhelper

You can drive it at usual if you just take out the conector to the airpump. If you still have warranty you must let it sit till they can chek it or you risk to ruin the pump.

jett3jett

ok im willing to take the engine cover off and give it a shot. Can you give me any more detailed info on how to disconnect the pump?

MBhelper

Just take out the power conector. Nothing more than that.

jett3jett

took it to mercedes this morning when i had the airmatic malfunction light come up on my dash 5 minutes into my first ride of the day. They said my pump wasn't working...replaced compressor and relay. Work,Labor, & tax = $913.00


Expensive day. Thinking about selling for something AMG

lungs414

What part of NY do you live? I'm from Bklyn and can recommend a very good Indy shop.

jett3jett

Im in long island. I serviced at rockville centre MB, gorgeous new service center.

Quadcammer

you think an AMG is gonna be cheaper or something?

jett3jett

Course not, but i intend on getting my next vehicle cpo or ill just buy a good exclusionary aftermarket warranty at the time of sale.