What does the maintenance code "500" mean on my 1999 ml 320?

Asked by Oct 22, 2016 at 01:23 PM about the 1999 Mercedes-Benz M-Class ML320

Question type: Maintenance & Repair

Had to replace gas cap with a generic replacement.  I feel that is the reason
the "check engine" light goes on.  Now, maintenance code "500" lights up.  
Why?

1 Answer

260

Generic caps usually don't seal properly and will cause Evap codes . Try a speed cap .they are quick fill ( no need to take off to put fuel in ) so far in haven't had any complaints or codes to clear from customers .Good luck

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mercedes-Benz M-Class Questions

Mercedes-Benz M-Class Experts

#1 jihadghazali
jihadghazali
Reputation 1,070
#2 wellness
wellness
Reputation 820
#3 stardust
stardust
Reputation 530
View All

Related Models For Sale

Used BMW X5
619 Great Deals out of 17,222 listings starting at $2,788
Used Mercedes-Benz E-Class
768 Great Deals out of 23,232 listings starting at $1,600
Used Mercedes-Benz C-Class
1,016 Great Deals out of 33,402 listings starting at $1,500
Used Mercedes-Benz S-Class
178 Great Deals out of 6,093 listings starting at $2,250
Used Mercedes-Benz G-Class
13 Great Deals out of 894 listings starting at $24,900
Used Jeep Grand Cherokee
1,174 Great Deals out of 71,081 listings starting at $495

Used Cars For Sale

2015 Mercedes-Benz M-Class For Sale
27 Great Deals out of 535 listings starting at $30,900
2014 Mercedes-Benz M-Class For Sale
71 Great Deals out of 1,487 listings starting at $25,895
2013 Mercedes-Benz M-Class For Sale
36 Great Deals out of 479 listings starting at $21,700
2012 Mercedes-Benz M-Class For Sale
36 Great Deals out of 435 listings starting at $18,983
2011 Mercedes-Benz M-Class For Sale
23 Great Deals out of 471 listings starting at $13,598