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#1
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E300D Wont start
My e300d W210 has developed a problem when the key is inserted in the ignition, the red and green lights in the rear view mirror start to flash continuously and wont go off. And the car wont start it cranks but wont start
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#2
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May be the anti-theft system. Heard of it happening if the key is not recognized when the door is unlocked.
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#3
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Hi, sounds like the K40 relay is failing. This is a common problem with these cars. If you click the search function above and use the term "K40", you'll find plenty to read up on the subject.
The relay is located under the plastic cover on the right side of the engine compartment. In this picture, it's the entire assembly visible at the bottom of the enclosure: If you're handy with a soldering iron, it's possible to clean up and repair the failing joints and traces on the circuit board.
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
#4
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I'm having a similar problem. My 97 e300d cranks strong but will not start. Wife just drove it a few hours earlier with no issues. I did set off the alarm on purpose to test the horn which I am troubleshooting (different issue). Horn works with the alarm, just not from the steering wheel.
How does one "reset" the security system? Thanks, .....Dan
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99 e300 98 e300 90 Suburban 1500 4x4 92 ZR-1 04 Tahoe 4x4 05 Scag 52" zero turn 97 e300 - totaled on black ice 84 300SD - gave to a friend 85 300TDT Euro - SOLD to my little bro |
#5
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The alarm is connected to an anti-start feature. The flashing lights mean that feature has been activated. The owner's manual tells the procedure for re-synchronizing the remote with the receiver electronics in the rear view mirror.
Failure to start can be caused by the K40 relay not providing power to open the electric fuel shutoff at the IP but would not cause the red/green lights to flash. Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#6
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Have to disagree (respectfully) with that last point. I just replaced the K40 in a '96 E300 last week. In addition to not starting, it would randomly set off the check engine light, and give warnings like "ETS/ABS", "battery discharged" (when it wasn't) and then -most colorfully- flash the red/green lights on the rear view mirror.
Replacing the K-40 (about $120.00 from the dealer and 5 minutes to plug it in) resolved all of these problems. In the photo posted by Kar Tek the K-40 is the box with all of the fuses in it. Not as complicated as it looks - just unplug the wiring connectors, push a little spring clip out of the way and lift it out. New one even includes all the fuses. |
#7
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I sit corrected. Thanks for that info; I'll keep it in mind if my wife's '96 E300D ever acts up in that manner. I guess the low voltage condition caused by a bad K40 can set off more than I thought. At least K40 isn't terribly expensive.
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
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