Wrench Tip: How To Fix a Faulty Cardinal Fob

Wrench Tip: How To Fix a Faulty Primal Play a trick on

by David Zipf

If you drive an older motorcar with keyless entry, you will discover over fourth dimension that the buttons stop working.  The general solution is to only supercede the battery.  But sometimes that doesn't actually fix anything.  Other times only one button isn't working while the residuum are.  If this is the case, the real problem lies deeper and fortunately, it's an easy fix with some simple tools and about 5 minutes of time.

Over again, our new-to-u.s. Mazdaspeed3 is both the source of this Wrench Tip too as the guinea grunter.  Our automobile is equipped with an aftermarket security system which has both a long range antenna and remote start (which I ever thought was a dumb gimmick until I tried it.  Information technology'southward actually pretty cool).  Anyway, the lock push on our remote was giving united states a lot of grief.  Nosotros would have to press information technology really hard to get it to work.  The unlock and remote outset buttons worked perfectly fine.  Even afterwards replacing the batteries, locking our machine was a bit problem.

Outset things get-go, we disassembled our remote.  Three screws hold it together.  The bombardment stays in the (beat upwards) back cover.  Adjacent, skin out the PCB and safe membrane button encompass.  Plainly your exact steps to get to this indicate will vary based on your ain vehicle's remote, but the goal is to free the PCB.  Pay no listen to the washer in the top left: information technology'south actually from my wah pedal which was also on the fritz and was in pieces while we were working on this remote.

Well hither's our trouble!  All of those rubber deposits are preventing the membrane switch from making proficient contact with the contact pads of the button.  The upper left contact set up is our lock button, which seems to see the most use.  If we can clean off the mess, our remote should piece of work perfectly.

Actual cleaning is surprisingly easy.  All you need is a bottle of rubbing booze and a few cotton swabs.  Simply utilize the alcohol as a solvent and rub it on the contact with your swab.  The alcohol will neatly dissolve any corrosion or rubber without damaging anything electrical.  Plus it dries quickly and cleanly.  If you have real electrical contact cleaner, feel gratuitous to use it instead.  Brake cleaner besides works in a compression, but exist very conscientious equally some automotive cleaners are far harsher than others.

Much better!  If this doesn't solve our dodgy push and so our remote is in deep trouble.  While the remote was apart nosotros also cleaned the inside of the buttons themselves which were also covered in gunk.

It took three passes to completely make clean our contacts.  Gross!  While you have the remote autonomously it would exist wise to replace the battery (if you oasis't already).  And so simply snap and screw everything back together and you're all done!  For our Mazda this fixed the remote perfectly.  No longer exercise we have to smash the lock button like a gorilla just to get our security system to engage.  This process was so successful, we concluded up cleaning the spare key's remote as well, plus the remote for our VehiCross.

Every bit a final tip, if you lot're an old schoolhouse gamer like me who loves his one-time Sega Genesis, rubbing alcohol and swabs are the perfect tools for cleaning corroded one-time cartridges that don't play right.  Simply swab the contacts of the cartridge with booze and scout how black the swab comes out.  It'south astonishing how well this refreshes old games.  I've had flea market sourced games go from beingness unplayable to working perfectly with just a few seconds of work.  This also works well on funky game controllers (nigh video game controller buttons employ the verbal same switches as automobile remotes).  And this Likewise works on funky guitar effects, especially within the female plug cavities (some ability switches on your effects can also be cleaned with alcohol and swabs).  And since we have hit my personal trifecta (cars, games, and guitars), we can safely wrap up this Wrench Tip.