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#1
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94 E420 fuel pump relay help!!!!!!!!!
hello, can anyone tell me where the heck is the fuel pump relay on the W124 E420? I need to replace it but can't find it. I had a 300E, but on thi car I have no clue. HELP!!!!!!!!!!!!!!!!!!!!!!!
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#2
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You can't find it because it is built into the MAS Relay.
Steve |
#3
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Can anyone provide more info on w124 E420?
ok if the fuel pump relay is in the MAS, then were is the MAS in this model car? I had a w124 E300, and in that car it's behind the battery, but with the E420 I havn't the slightest clue. Please help!!!!!!!!!!
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#4
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K27 Fuel Pump Relay location
According to my CD, in the E420 it's inside the car under the right side of the rear seat in a depression in the floor.
Cheers JJ |
#5
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mmmmm. And if the windows or roof got left open during past rain storms chances are the depression got flooded.
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Earl 1993 190E 2.3 2000 Toyota 4x4 Tundra |
#6
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All the previous posts are NOT correct!!!!!
MAS relays were only on CIS-E injected cars! The fuel pump relay on the 1993-95 E320's (300E in 93) is located behind the battery near the ABS computer. GREEN relay with fuse. The W124.034 chassis (400E/E420) is under the seat on the passenger side.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#7
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As DOC states, it is under the rear seat on the passenger side. The relay should be green...
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#8
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hey thanks!!!!!!!!
Hey thanks everyone, I'm so excited, Yes the fuel pump relay is green. This is the answer I've been looking for. The reason I want to change it is because my for died from this problem before and having a spare one will keep you from calling AAA road side service for those out here in California. My BMW 733I had the same problem, left me helpless, cost me $300 towing back to my home; All becuase of a $23 fuse. piece of crap BMW. another time 300E die on the road, waited 2 hours for towing. Now, E420 died but restarted later. I just want to have one ready and in hand so when the time comes to replace one, I'll beready for it and won't be left on the road waiting.
Thanks to all that responded or left a comment, I'm sure others will find your contribution to the forum as valueable as I have. thank!!!!!! Last edited by benzsu; 01-17-2006 at 05:06 PM. |
#9
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That may be a good strategy however you will probably have to wait another 10 to 12 years before the new one fails.
You might want to repair the old one and keep it for a spare. Usually circular cracks develop around the soldered pins on the back of relay's circuit board. A couple of spots of fresh solder can make the relay as good as new.
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Earl 1993 190E 2.3 2000 Toyota 4x4 Tundra |
#10
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I had the same problem....
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