Check engine light is on

5

Asked by May 24, 2011 at 12:46 AM about the 1999 Mercedes-Benz M-Class ML 320 4MATIC

Question type: Maintenance & Repair

Light came on at about 147k car seems to be running the same. Any idea what it might be?

5 Answers

315

Could be a faulty or loose gas cap if the vehicle seems to be running correctly. Esp if you just filled up before the light came on. That would def be my guess if the car were newer but with its age and mileage it could be a number of things. I suggest you have the codes read somewhere.

2 people found this helpful.
40

I had the same problem...............it was the MAF Motor Air Flow......if you buy the part at AutoZone for $150 you can replace it yourself (5 minutes max). If not a mechanic can do it for $500+++

4 people found this helpful.
710

may be your car has the obd2 trouble code table, you need to diagnose the code first, and I know this tool can do your car, http://chinasinoy.com/wholesale/mb-star-c3-pro-with-seven-cable-for-benz-truck-and-cars-fit-all-computer.html or you need take your car to local dealer to do it.

1 people found this helpful.
75

It may be the sensor sending unit. We were getting false readings and finally the dealer diagnosed the problem and replaced the unit at no charge. We were out of warrenty...gotta love that!

2 people found this helpful.
1,065

pull the fault code and look it up , erase it and drive the car to see if it comes back, generic obd2 tool isnt much money and less than guessing , that can get very pricey the code for a loose or bad fuel cap is described as a small emission leak

1 people found this helpful.

Your Answer

M-Class

Looking for a Used M-Class in your area?

CarGurus has 5,935 nationwide M-Class listings starting at $1,988.

ZIP:

Mercedes-Benz M-Class Experts

  • #1
    jihadghazali
    Reputation
    1,230
  • #2
    wellness
    Reputation
    1,010
  • #3
    snowseal19
    Reputation
    780
View All

Related Models For Sale

Used BMW X5
325 Great Deals out of 18,048 listings starting at $2,895
Used Mercedes-Benz E-Class
396 Great Deals out of 19,984 listings starting at $1,850
Used Mercedes-Benz C-Class
668 Great Deals out of 25,818 listings starting at $1,488
Used Mercedes-Benz S-Class
106 Great Deals out of 7,167 listings starting at $2,000
Used Mercedes-Benz G-Class
6 Great Deals out of 1,467 listings starting at $26,995
Used Land Rover Range Rover
74 Great Deals out of 5,053 listings starting at $2,850

Used Cars For Sale

2015 Mercedes-Benz M-Class For Sale
89 Great Deals out of 2,014 listings starting at $19,995
2014 Mercedes-Benz M-Class For Sale
38 Great Deals out of 714 listings starting at $18,995
2013 Mercedes-Benz M-Class For Sale
17 Great Deals out of 419 listings starting at $16,998
2012 Mercedes-Benz M-Class For Sale
20 Great Deals out of 449 listings starting at $12,999
2011 Mercedes-Benz M-Class For Sale
13 Great Deals out of 421 listings starting at $8,880

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.