2002 Mercedes ML320 dead, no crank, no dash lights, good battery

5

Asked by Mar 29, 2016 at 06:08 PM about the 2002 Mercedes-Benz M-Class ML 320

Question type: Maintenance & Repair

I have an intermittent problem with my ML320.  Unlock the door with the
key fob.  Sit down, put the key in the ignition, turn the key, and nothing.  No
clicks, no noise.  Dash lights are completely off.  Radio is dead.  Even the
little red light for the security next to the radio is off.  

Jump the car, and it cranks like no problem, except the clock is blinking
12:00 and I re-enter the radio code.  I drive it around a few days, making
several trips.  Then the above problem repeats.  Strange that the car will
unlock with the key fob and everything appears fine, until I turn the ignition.  
Then, lights out.

The battery is new (purchased in November), and I get 12.5VDC.  When it
is cranked, I get 14.2VDC from the alternator.  

Please help.  This is my only transportation, and I can't rely on it.

1 Answer

5

Here's your dumb problem with an equally dumb solution. Replace the battery in the key fob. Apparently, the low battery in the key had just enough juice to unlock the doors and then die. When the key went into the ignition, the key battery had nothing, not even enough to provide power to the RFID chip(or whatever) inside the key. Since that was dead, the cars security system overrides the car and a dead car is the result. The car thought I was trying to steal it. Solution: New key fob battery.

Your Answer

Mercedes-Benz M-Class Experts

  • #1
    jihadghazali
    Reputation
    1,220
  • #2
    wellness
    Reputation
    980
  • #3
    snowseal19
    Reputation
    660
View All

Related Models For Sale

Used BMW X5
335 Great Deals out of 15,482 listings starting at $3,300
Used Mercedes-Benz E-Class
700 Great Deals out of 22,645 listings starting at $1,450
Used Mercedes-Benz C-Class
896 Great Deals out of 28,327 listings starting at $2,001
Used Mercedes-Benz S-Class
147 Great Deals out of 8,131 listings starting at $1,200
Used Porsche Cayenne
117 Great Deals out of 5,133 listings starting at $4,900
Used Mercedes-Benz G-Class
10 Great Deals out of 891 listings starting at $19,980
Used Jeep Grand Cherokee
1,061 Great Deals out of 71,467 listings starting at $1,195
Used Land Rover Range Rover
67 Great Deals out of 4,325 listings starting at $2,999

Used Cars For Sale

2015 Mercedes-Benz M-Class For Sale
114 Great Deals out of 1,931 listings starting at $21,990
2014 Mercedes-Benz M-Class For Sale
72 Great Deals out of 1,062 listings starting at $21,969
2013 Mercedes-Benz M-Class For Sale
26 Great Deals out of 422 listings starting at $17,995
2012 Mercedes-Benz M-Class For Sale
15 Great Deals out of 456 listings starting at $17,881
2011 Mercedes-Benz M-Class For Sale
27 Great Deals out of 396 listings starting at $9,999

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.