Check engine light on,
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
Check engine light on,
Car feels like it's stalling, same situation right before transmission died and needed to be replaced 10,000 km ago it's under warranty but idk if it's that, maybe misfire? The coil packs has oil on it.
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
The first thing I'd do is get the codes pulled. Oil on the coil packs is common, the source of the leak is likely bad valve cover seals, and I doubt that has anything to do with the MIL .
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
Two choices 1 get codes for $60 at an Indy and hope it's something I can do at home like spark plugs. Or go to the dealer $120 just for codes. If I get codes from Indy I don't have to get codes again from the dealer right? Don't wanna do it twice. Putting 87-89 octane gas wouldn't b this dramatic would it? I say that cuz dad got gas from some1 claiming its 91 for a cheap price $1/L hope that's not y
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
MIL? Malfunction indicator light right? Lol
Last edited by Rogue-CLK; Nov 11, 2013 at 10:20 PM.
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
Check engine light is gone :/ after I restart so many times. I did just start and go, didn't wait for it to warm up. Ill still check it out tmr morning. Warranty is for motor and tranny etc, motor can mean anything :/
MBworld Guru
Joined: Dec 2009
Posts: 10,782
Likes: 1,011
NO LONGER ACTIVE
When you have an MIL (yes, Malfunction Indicator Light) illuminated, my first step would be to check the codes with a generic OBDII scanner. Here in the USA (you don't say where you are - please update your forum profile), some auto parts stores, such as Auto Zone, will check for free. Otherwise, you can buy a generic scanner for yourself for about US$50. The problem is, sometimes a single generic OBDII code can actually be multiple MBZ-specific DTCs, so really, it is best to get a scan with SDS. Also, generic scanners can usually only check ECU (engine) codes and not the other dozen-plus systems. But, sometimes the generic OBDII code is enough to go on, or at least a good place to start. Also, the code will likely still be stored even though the MIL is no longer illuminated.
Trending Topics
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
I'll check with a generic OBDII scanner tomorrow, was gonna go today but they closed by the time I woke up :/. Drove the car after 10 mins of warming up seemed fine. But it did hesitate again. Just updated but not much besides that I live in Canada. This problem isn't because of bad or low grade gas right?
MB World Stories
The Best of Mercedes & AMG
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
8 Mercedes Models With Poor Reliability Records
Verdad Gallardo
Member
Joined: May 2011
Posts: 165
Likes: 4
2005 CLK 320
One thing to note: when you get the codes read, make a note of them and then clear them. Some of them may be old and not relevant to your current problem. If your CEL/MIL lights again, check the codes again for the most recent ones.
As an aside, I recently bought one of these
which is wifi OBDII reader that works with an iphone app. (There are bluetooth ones also). Still playing with the various apps available, both free and paid-for, but even the basic free one gives active codes, pending codes and real time displays of various values like coolant temp, MAF, engine rpm.
Cost about $22 on Amazon.
Again, not MB specific codes, but a good start.
As an aside, I recently bought one of these
which is wifi OBDII reader that works with an iphone app. (There are bluetooth ones also). Still playing with the various apps available, both free and paid-for, but even the basic free one gives active codes, pending codes and real time displays of various values like coolant temp, MAF, engine rpm.
Cost about $22 on Amazon.
Again, not MB specific codes, but a good start.
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
Update, used a geniscan GS300
Codes are:
P0104 (MAF VAF circuit intermittent)
P0456 (TPS/pedal position sensor switch ckt range/performance)
P0221 (Evap emission control system leak very small)
My last scan from the dealer said something about the pedal sensor. Maybe it needs to b replaced, I notice how when I'm in park and rev once... there's a... "vroom VROOM!" I hear it twice, a small vroom then the bigger normal VROOM.
Codes are:
P0104 (MAF VAF circuit intermittent)
P0456 (TPS/pedal position sensor switch ckt range/performance)
P0221 (Evap emission control system leak very small)
My last scan from the dealer said something about the pedal sensor. Maybe it needs to b replaced, I notice how when I'm in park and rev once... there's a... "vroom VROOM!" I hear it twice, a small vroom then the bigger normal VROOM.
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
That's what I was afraid of haha would u think this would b covered under warranty (typically)? Can't confirm right now of they do it's a weekend. How often does this happen?
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,364
Likes: 149
2012 C300 4MATIC Sport
and about 15 minutes to replace it if you search for the DIY guide here on the forum.
Very easy to do.
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
MBWorld Fanatic!
Joined: Aug 2013
Posts: 1,364
Likes: 149
2012 C300 4MATIC Sport
Just make sure it's the Bosch one, which at the kijiji price, I doubt it.
Super Member
Joined: Apr 2002
Posts: 877
Likes: 0
asdf
if it feels like it's stalling, most likely it's going to be the Mass Airflow Sensor. I had the same symptoms. Car starts up fine, idle fluctuates, car stalls. I bought one off parts.com It wasn't that expensive. It took 30 minutes to install since it's a pain in the *** to remove.
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
I changed the sensor brand new and the code came back up a few days after. Codes p0104 and p0221. Is my MAF sensor defective? U think it's possible to get a refund or exchange?
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
I waited for it to reach to temp and seems fine. MIL is off. Feels hesitant when I start and go. Guess I gotta let it warm up. But while the MIL was on I had the same symptoms as before I changed the MAF sensor. And in 3 gear the car revs from 3000 to 5000rpm but doesn't go faster like it's slipping. Currently works fine after waiting 4-5 mins to warm up.
Thread Starter
Senior Member
Joined: Feb 2013
Posts: 302
Likes: 17
From: Canada
2016 C300 4Matic
Cleaned the new MAF sensor and all is good for now only codes are the p0221 pending Evap system very small leak. Haven't changed the air filter yet so might the problem :/ cleaned it out but not completely an no clue when it or if it was ever changed :/
