Possible ignition switch problem?

10

Asked by Feb 14, 2013 at 02:04 PM about the 2003 Mercedes-Benz C-Class C 240 Sedan

Question type: Maintenance & Repair

We have replaced starter on a 2003 MB C240 with just 50K . Problem is when turning key the old and
now the new starter solenoid stays engaged turning the engine not allowing it to fire. Turning key off
wait a second try again and normally it will start properly with no effort. Once in a while it stays
engaged again but after a second try it typically starts right up. The old starter worked fine until we had
this problem with the starter solenoid staying engaged. Changed out the starter...not a fun job as you
know having to drop the entire exhaust system to change the starter. Then for several weeks all was
fine and then the same problem started again with this new starter. So it appears that the original
starter and now the new starter are not the problem. Best as I can see it may be the ignition switch but
have no way of knowing. No indication of any problem with the switch. Not hard to turn, no catching or
any physical sign of a problem. Key has only 2 keys hanging on it so can't say the switch is overloaded
with a heavy set of keys to create some mechanical issue. No error codes on the dash or other issues
have cropped up. Hate to think we spent $400 for a new starter for nothing...

2 Answers

that money was spent LEARNING how not easy the job is. Hopefull you had an auto lift and did not have to scrunch around under there...I can see where this could be a problem. Don't really know the archetecture of the motor area, but perphaps a connector was jarred loose on the firewall, or someplace that you can't see, like a connector with male and female parts that got tugged, and now does not make the connection. It's easy to be NOT DAINTY when on your back with no elbow room~ Go through and inspect everything to make sure that it is behaving itself anywhere's near the job you did.

1 out of 1 people think this is helpful.
4,485

Did you put a new starter and reused the old starter solenoid or is it one unit? If it's all new, then... ...the problem could be the starter relay. That should have been the first thing that gets checked before spending money on a new starter.

Your Answer

Add photo

Related Questions

C-Class

Looking for a Used C-Class in your area?

CarGurus has 32,550 nationwide C-Class listings starting at $1,750.

ZIP:

Search Mercedes-Benz C-Class Questions

Mercedes-Benz C-Class Experts

#1 Lorne Grandison
Lorne Grandison
Reputation 4,400
#2 PPC123
PPC123
Reputation 3,030
#3 dandyoun
dandyoun
Reputation 2,210
View All

Related Models For Sale

Used Mercedes-Benz E-Class
588 Great Deals out of 23,560 listings starting at $1,450
Used BMW 3 Series
1,469 Great Deals out of 38,438 listings starting at $1,700
Used Mercedes-Benz S-Class
196 Great Deals out of 6,367 listings starting at $2,995
Used BMW 5 Series
643 Great Deals out of 15,157 listings starting at $1,877
Used Audi A4
266 Great Deals out of 11,548 listings starting at $1,333
Used Mercedes-Benz CL-Class
28 Great Deals out of 642 listings starting at $4,395
Used Mercedes-Benz M-Class
212 Great Deals out of 5,586 listings starting at $1,395
Used BMW M3
67 Great Deals out of 1,922 listings starting at $4,350
Used Mercedes-Benz CLK-Class
45 Great Deals out of 1,546 listings starting at $2,800
Used Ford Mustang
397 Great Deals out of 44,403 listings starting at $1,000
Used Chevrolet Camaro
309 Great Deals out of 38,867 listings starting at $1,250
Used Honda Accord
887 Great Deals out of 82,090 listings starting at $999

Used Cars For Sale

2017 Mercedes-Benz C-Class For Sale
9 Great Deals out of 12,828 listings starting at $33,999
2016 Mercedes-Benz C-Class For Sale
202 Great Deals out of 4,683 listings starting at $24,995
2015 Mercedes-Benz C-Class For Sale
34 Great Deals out of 1,261 listings starting at $21,499
2014 Mercedes-Benz C-Class For Sale
132 Great Deals out of 3,715 listings starting at $14,900
2013 Mercedes-Benz C-Class For Sale
129 Great Deals out of 2,477 listings starting at $11,995