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#1
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W203 key fob got wet, now doesn't work
A friend had the key fob for his W203 C240 in his pants pocket when the pants went in the laundry. They unlocked the car once after getting wet but now doesn't work despite a couple of battery changes.
Is it possible to clean and dry it more thoroughly? What are his options in terms of a replacement? Dealer wants $250-350. Thanks, Sixto 87 300D |
#2
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Must order from dealer! NO other option!
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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 |
#3
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Try other dealers, or this. The keys should be around $200
http://www.benzworld.org/forums/w210-e-class/1370217-120-smartkeys-available.html |
#4
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You can try a hail Mary:
1) Take the battery out 2) Cook the key in an oven set on low. Or set it on your dashboard in the sun. Basically you want to get it very hot but don't melt it! Then put in a known-good battery. If that doesn't work, then considering you have "nothing to lose", take it apart, down to the circuit board. scrape off any obvious corrosion you find. Make sure to check the battery contacts. Electronics are generally fine with water. They can be washed and dried no problem. The problem is if they get wet WHILE POWERED (battery in). This is what causes the damage. For example, if you drop a cell phone in water REMOVE THE BATTERY IMMEDIATELY. Then dry it out and it should be fine. Electronic boards are washed in manufacture so they don't mind at all. Good luck!
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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra |
#5
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Check the contacts on the battery tray part of the key.
The contacts were bent on my G Wagon key, and it wouldnt unlock or lock the car. Bent then back so they make contact, and voila, unlock and lock work again.
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-Justin 91 560 SEC AMG - other dogs dd 01 Honda S2000 - dogs dd 07 MB ML320 CDI - dd 16 Lexus IS250 - wifes dd it's automatic. |
#6
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Just today ....
the key fob for my '97 E320 went through the washing machine. Found it just before wife started the dryer. I took it apart and dried it with a hair dryer. Put in new batteries as the originals appeared to be damaged. Went thru the re-sync procedure in the owner's manual amd all is fine now. Pay careful attentinon as you disassemble the case. Mine has a tricky little spring to make the key extend when a putton on the fob is punched. You have to put that back just so and actually wind the spring a couple of turns before putting the case together.
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#7
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I would have put it in distilled water so to rinse the mineral deposits from the regular water.Then let it air dry after cracking it open.
I've done it with a few iPods and they still work to this day. |
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