Car won't start

Asked by Apr 09, 2017 at 12:35 PM about the 2010 Mercedes-Benz C-Class

Question type: Maintenance & Repair

My Mercedes c180 cgi 2010 auto won't start. The
car lights come on, the radio works but the air con
won't come on. The key will turn but non of the
dash lights come on and the steering doesn't
unlock. Iv check the battery and its is fine. What
could be the problem?

1 Answer

5

Sounds like a steering column issue just had mine fixed some how the the security system or key fob on the steering column. may need to be replaced. Many things cause "no start conditions" Replacement of the battery should rule the battery out and also the alternator charge as the new battery should have many "starts" in it. The alternator could have a bad diode, and thus discharge the battery when it is not working. Should be an easy diagnose. Put an amp meter on the main and secondary positive leads and check for current flow with systems off. If older car with many starts, the starter motor would be next suspect. Turn on the headlights and try to start. If the headlights dim but engine doesn't crank, the starter could be shorted. If lights don't dim but still no start, starter could be open. Starters usually fail with intermittent starts. This should not throw a lot of codes unless it is shorted. If the battery is pulled low by a shorted starter, all sorts of miscellaneous codes will be thrown. Especially, for some reason, a low battery throws a transmission fault. Neutral/park switch is next "no start" failure. Usually will not throw codes. Wiggle gear shift while trying to start. Next is the key fob battery. If this is an older truck, a low battery in the key will cause the security not to be recognized. However, again this does not usually throw a lot of codes, unless you have not serviced the car regularly and the codes are from something else. Same with ignition switch, start relay. Dealer should be able to tell with signal tracing, why starter is not getting energize signal Bad sun-roof drains or hood cowl drains can also cause a condition of "no start" due to accumulation of water around the computer connections. This thing has several computers and corrosion on the connectors will screw the system.

Your Answer

Mercedes-Benz C-Class Experts

  • #1
    Lorne Grandison
    Reputation
    5,110
  • #2
    PPC123
    Reputation
    3,680
  • #3
    zabi
    Reputation
    2,610
View All

Related Models For Sale

Used Mercedes-Benz E-Class
594 Great Deals out of 20,681 listings starting at $2,495
Used BMW 3 Series
1,114 Great Deals out of 33,827 listings starting at $1,000
Used Mercedes-Benz S-Class
154 Great Deals out of 7,112 listings starting at $2,888
Used BMW 5 Series
521 Great Deals out of 15,994 listings starting at $2,000
Used Mercedes-Benz CLS-Class
86 Great Deals out of 2,499 listings starting at $5,950
Used Audi A4
268 Great Deals out of 12,077 listings starting at $199
Used BMW M3
37 Great Deals out of 2,039 listings starting at $6,995
Used Mercedes-Benz M-Class
283 Great Deals out of 6,081 listings starting at $1,950
Used Ford Mustang
596 Great Deals out of 36,387 listings starting at $899
Used Mercedes-Benz CL-Class
20 Great Deals out of 507 listings starting at $3,999
Used Honda Accord
1,015 Great Deals out of 60,156 listings starting at $1,099
Used Chevrolet Camaro
445 Great Deals out of 30,844 listings starting at $1,450
Used Dodge Charger
420 Great Deals out of 28,475 listings starting at $2,490
Used Mercedes-Benz G-Class
13 Great Deals out of 1,014 listings starting at $19,995

Used Cars For Sale

2017 Mercedes-Benz C-Class For Sale
162 Great Deals out of 5,182 listings starting at $28,379
2016 Mercedes-Benz C-Class For Sale
46 Great Deals out of 1,292 listings starting at $22,991
2015 Mercedes-Benz C-Class For Sale
188 Great Deals out of 3,456 listings starting at $18,977
2014 Mercedes-Benz C-Class For Sale
66 Great Deals out of 1,537 listings starting at $13,980
2013 Mercedes-Benz C-Class For Sale
42 Great Deals out of 1,249 listings starting at $10,990

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.