Hey guys...i did search the forum but still i cant find the exact problem that im facing right now...

i dynoed my car friday which was fun...
didnt drive on sat.

started up today and warmed the car up a bit and before i got out of my garage the CEL(i think) came up. the left yellow icon in the middle cluster.

I still drove it around was worried...i tried driving through different gears and also tired leaving the car off for a couple of hours and started back up and still the light was there.... i opened the hood and looked around everything seems fine....SC was engaging fine and im really stuck now....Also i dont have and factory warrenty left....and i was about to install my headers and pulley tomorrow...but i guess i cant......

CAN someone please help me?

THanks!

Scann your car for errors (if you don't have a scanner go to Autozone they'll do it for free) and post the error codes you're receiving. Could be a number of things..

Where are you located?

im located in Indiana...will do i will go to autozone today to check.

the internet ad of item 94169 to the harbor store near you and they will honor the internet price of 40 bucks.Code scanner is a must have.Read the codes,probably an easy fix.
http://www.harborfreight.com/cpi/cta..._stores.taf#IN

i got the car scanned today....

P0410
Secondary Air Injection System Malfunction.

So what am i dealing with here?
BIG, SMALL problem ?
is it going to be expensive fix?

should i be driving my car at all for now?
cant bring to dealer until friday.

Thanks to all of you helping me out

i just found out my car is a bit different...how come mine doesnt say CHECK ENGINE, but instead it has a sign...

weird....

I just had an air injection part replaced in my c32 by the dealer. It could be a manufacturer issue like mine. They replaced it for free because it was a recall.

Do a search on the error code. There's tons of info on it....
Go to the dealer and have them replace your relay to the secondary air pump (there's a recall on the relay so they'll replace it for free) If you still have warranty they'll replace the pump as well. If you don't have warranty just buy the secondary air pump and replace it yourself it's straight forward and easy to reach. The pump is located on the passenger side next to the headlight. Hope this helps, good luck!

i did the recall before...ill ask if they can replace it for free ...damn...but ill ask my options and if they are too pricy ill just buy a pump and deal with it...

but is it safe to drive the car ?

i just called the dealer and the SA told me that it might cost around $150 for relays...and almost $900 for the pump...

and i wanted to ask you all where can i buy the pump and also maybe the relays...

Thanks!

Check the relay first, why buy a pump if it is just the relay. MB should not charge more than $30 for the relay and you can change it yourself in 30 seconds.

Sorry about the hassle but i dont know where the relay or the pump is located...can anyone help me out with that?

im not an expert when it comes to locating things under the hood..

i would really appericiated!

Thanks!

$900 for the pump?? No way.. I bought the pump at the dealer and it was $350 I believe. I don't know where you live but call up a couple of dealers don't let them fool you. Here's some info hope this helps oh and btw the pump is located on the passenger side next to the headlight..

SECONDARY AIR PUMP (GETTING CHECK ENGINE LIGHT/ERROR CODE P0410)
PART#000-140-42-85 OR 0580000010

RELAY
PART#002-542-26-19
203-545-16-01(CONTROL UNIT)

Also you mentioned that they replaced the relay before and the pump, I would make them pay for it since they did not do the job right the 1st time.

Good luck!

It's safe to drive the car.. I drove mine for over 20K before I replaced it.
I would not buy the pump only since it's probably the relay that shorted out your pump which means if you buy just the pump it will die out again and then you'll prolly end up replacing the relay and the pump again.

It is safe to drive as long as the relay has failed in the 'off' position, or the pump has actually ceased to function. Mine failed with the relay in the closed, or 'on' position, and I think it was a miracle that the pump didn't catch fire, it was that hot. Alchang32 - I think you would have mentioned that you could hear the pump buzzing manically if it had stuck on, but worth checking before deciding it is safe to drive.

I agree. I keep the scanner in the car for those moments.

Okay sorry for the misunderstand...the pump does cost around 350 ....when they quoted me for 900 was pump + labor ....

Well i got a mechanic to check out my car and he tested my pump and we concluded it was the relay...

so i went to mercedes and got a relay for $21.50.

the part # 20360273
A 002 542 65 19 05.

i notice that the part number is a bit different then the one you put on here...

also how hard is it to swap out a relay?

Thanks!