This is a bit of a minor niggle, but it annoys me!
I have to put a new battery into the unit about every four months, this is
the first car I have had which has had remote central locking so I don't
really have anything to make a comparision against but it seems a bit too
often to me.
I use it about four times a day to unlock/lock the car, most days. Is this
typical battery life for a Ford remote key in anyones experience?
I change my fob battery yearly as a precaution but it is still OK at that
I can only suggest making sure your replacements are from a reliable source
and that the button(s) are not being accidentally pressed when in your
The battery I have just taken out (and put in) is a Panasonic, being a well
known brand you would hope their batteries would be OK.
I don't really keep my keys in my pocket very much, at home I just leave
them lying on my desk. At work I leave them on my desk. If I am at someones
house I will probably put them down somewhere next to my phone (incredibly I
never manage to misplace them), so I would be surprised if that was the
reason the battery was running down quickly.
But at 2 quid a battery its not the end of the world, I was just curious to
know if anyone else had noticed the same.
My 1.8 Zetec is 4 years old in January and I am still on the original
battery. I did used to use the key as a manual lock for about a year
thinking that I would save the battery so the remote and therefore the
battery was only used intermittently then. When I thought about it
seriously, I decided that it would be easier and cheaper to change the
battery than it would be to replace a worn lock and/or key. Not sure what
battery is in there but it still works AOK from some distance away. I also
have the keys in my pocket at all times, the key and the buttons are worn
I will soon be on my fifth year and still the first battery for the similar
remote for my Ford
Escort. I hope (and expect) that it will be a similar long life for the
remote that came with my other car, a 2002 Focus.
(OT: The original car battery "just died" about 3 weeks ago on that Escort,
while I was out driving it, but close to home. As it was actually a dark and
stormy night, that was an exciting ride home, hoping the car would make it,
watching the windshield wipers creeeeep across the windshield, seeing all
the exterior lights go out and the emergency lights on the dashboard pop on
one by one, as I headed home. Turned out to be the alternator had just gone
belly up... )
The other suggestions from the group all seem good, particularly that the
remote might have gotten crudded up on the inside, or that it's simply
defective. My pockets are always full of stuff that could otherwise be
depressing the already well-worn "open" button, but there are no apparent
effects from that.
I'd upgrade your minor niggle to "moderate annoyance", Martin, but that's
just me :) Best of luck with whatever solution chosen,
Dave (somewhat surprised that spellcheck recognizes "niggled" but not
I had a similar experience a few years ago when I had a 205. The alternator
had gone so I switched off everythng I didn't actually need and started
heading for home watching the lights get dimmer and hoping I would make it
back, didn't quite make it home!!
It looks clean on the inside but I didn't want pull the cicuit board out so
I can't be sure. I think it a defective fob. I will probably change the car
next summer/autumn so that's only two more batteries at most, I think the
bank balance can stand that one
Thanks for everyones comments!
I'd hazard a guess that your remote is defective or contaminated. Very small
amounts of grease or other contaminates can reduce battery life in the
manner you describe. You can clean it yourself thus:
Take it apart as though you were replacing the battery. Remove the circuit
board and then the "rubber" keys. Dip the entire circuit board in 97%
isopropyl alcohol (usually can be found in drug stores) and let it soak for
several minutes. Swish it around thoroughly. Remove, shake and wait for the
alcohol to evaporate from the circuit board (5 or 10 minutes). Check the
"rubber" key pad for any "fuzz" or other contaminates. Remove as necessary.
Put it all back together. If you try this, be *very* careful with handling
the alcohol - it's *extremely* flammable.
don't touch the battery with your bare fingers
hold it in paper or use PLASTIC tweezers
treat it like a halogen bulb
I change fords every two years never changed a battery just the car
also use global closing on windows which involves a longer press
If you haven't got a spare key get one from Ford it will come with the
original ford battery it then should last at least 2 years
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