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<!-- from fixya rte -->Where do I get a battery for my key? - Cars & Trucks

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Most keys take a #3220 which is sold at most stores in the battery section. be careful how long the battery is out of key or you will have to reprogram it!

Posted on Nov 07, 2014

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I got the key wet, dropped my keys and the battery came out. So im wondering since the key isn't intact does that have any reason with the car not starting?


Again what car are we talking about. Yes it might be. The keys normally deactivate the engine immobilizer when pressed. If the battery came out and the keys also being wet, it can be the cause for it not to work properly. Take the battery out, put the keys in the sun to dry out for an hour or so. Put back the battery correctly and try again.

Aug 05, 2015 | Cars & Trucks

1 Answer

Have not replaced the battery in the key. I am told the battery in the key charges while driving and should not be replaced. Please advise. I am stuck.


Hi Geno,
You may have two different problems.
The key does indeed have a rechargeable battery and you do not replace the batteries in BMW keys. Once the key starts failing, you probably need a new key. If you have another key, you can find instructions online to reprogram the key that is causing problems with the other good key. Try that first to see if the programming just glitched off. I have seen this happen. I also have had keys just go bad.

The random flashing lights and quiet alarm are most likely due to a CAR battery that has a dead cell. I have had a number of BMWs on my car lot that will start and ACT like the battery is OK, but the hazard lights will randomly go on. Once the alternator charges the battery further, the lights go off as the battery is charged.

I agree with Patrick D....make 100% sure the charging system and battery are operating within the manufacturer specs. Just because it starts and seems OK, does not mean it is. Hope this helps, good luck.

May 24, 2014 | 2003 BMW 5 Series

1 Answer

My key will not start my car,then it wouldn't open the door


This model year comes equipped with Keyless Enter-N-Go, which uses an electronic transmitter in the key fob to communicate with the car. The vehicle's doors will not unlock and the vehicle will not start if the key fob is not matched to the vehicle or if the commonly-available watch battery in the key fob has been depleted. The EVIC will flash a message upon vehicle startup if it determines that the battery in your key fob is low on charge and should be replaced.

To open the doors, try the following:

1. Use the spare key fob that came with the vehicle. If the battery in your main key fob is depleted, the spare key fob's battery may still retain charge due to its much more occasional use.

2. The key fob comes with an emergency key inside of it. To remove the emergency key, slide the mechanical latch on the back of the key fob sideways with your thumb and then pull the key out with your other hand. This key will allow you to unlock the driver's side door and glove compartment. It will not start the vehicle.

To start the car with a severely-depleted key fob battery, try the following:

1. In case the ignition switch does not change with the push of a button, the RKE transmitter (Key Fob) may have a low or dead battery. In this situation a back-up method can be used to operate the ignition switch. Put the nose side (side opposite of the emergency key) of the Key Fob against the ENGINE START/STOP button and push to operate the ignition switch.

To replace the battery in your key fob, try the following:

1. Remove the emergency key from the key fob following the directions above.

2. Using a vinyl spudger tool or a flat-bladed screwdriver, gently pry the two halves of the key fob apart at the indented slot above the slot for the emergency key.

3. Replace the depleted battery with a new battery. Use the depleted battery to visually match the size. The battery is usually available wherever watch or hearing-aid batteries are sold.

4. Snap the key fob back together and replace the emergency key. If the issue is a depleted battery, your key fob should operate normally.

If the issue is not related to the state of the battery, you will probably need to contact your local dealer for service.

Source: Owner's Manual, pages 12-17

http://justgivemethedamnmanual.com/dodge/dodge-charger-owners-manual/

Mar 01, 2014 | 2011 Dodge Charger

1 Answer

2003 Aurora, left key on and battery went dead. Recharged battery. Won't start. Turn key to on, security light out and check engine light on. Move key to start and nothing, back to on, one minut


Very interesting site here.. regarding your problem. http://vatspasslockpasskeysecurityhelp.yolasite.com/
Another thought.. even though you charged the battery, it's not at all uncommon for a car battery to be very damaged by fully discharging. Especially if not new-ish. One or more cells in it may be bad causing the overall voltage to be under normal. This alone can cause the problem you have. I would try jumping it with another car or test the battery to see if it's got at least 12.7 to 12.9 volts when sitting doing nothing. Good luck.

Nov 28, 2012 | Cars & Trucks

1 Answer

Car will not start.It turns over but will not fire.Remote key control is out.Fuelpump is OK. Battery is new.There must be some electrical short somewhere.Do not have access to a code scanner.75 miles away...


equipped with an SID (Saab Information Display) unit that displays various information about the amount of fuel left, the radio station you're listening to and the key's battery status. It is time to change your key batteries if the key stops working or responds slower than usual. The SID on your car will also say "Replace Key Battery." Saab keys use either a CR 2032 or a CR 1632 battery depending on key type. There are two types of keys. The first generation key has one key and a transponder and the second generation key is a one piece key with a built in transponder.
First Generation Key
  • 1 Loosen the single screw that is located by the key ring. Use the small Phillips screwdriver to remove the screw that is on top of the transponder.
  • 2 Lift the plastic top. Remove the old battery and insert the new CR 2032 battery.
  • 3 Put the transponder back together and tighten the screw using the Phillips screwdriver.
  • 4 Press the alarm five times to re-synchronize the transponder with your car.
  • Second Generation Key
  • 1 Push the plastic catch with the pushpin to open the cover latch. The transponder has a plastic catch that is hard to depress. The pushpin will separate it.
  • 2 Lift the plastic cover. Remove the old battery and replace it with the new CR 1632 battery. Position the battery properly.
  • 3 Put the cover back and press the plastic together.
  • 4 Test the transponder with your car to make sure it is working.
  • Dec 02, 2010 | Saab 9 5 Cars & Trucks

    1 Answer

    How to replace ignition key battery


    remove mettle key blade from you key, for remove key blade you have to slide lock witch is sitting in top of your key, near the mettle key you can see small sliding switch, remove mettle key, then have a look not in the deep hole witch is mettle key was insert but left of the mettle key remove sliding switch small grow witch is mettle key head ware sitting in, if you have a good look small gray sliding part is there, you have to use mettle key blade to press it and press it backward of key when you press it you can see it's moving, keep that moving part press by mettle key and pull out the key head, then you can see battery in that part witch is came out from key before remove the battery keep in mind negative and positive it have mention on battery replace battery and jest push key head in to the key til lock insert the right way , is this information helped you? please leave a comment.

    Oct 16, 2010 | 2000 Mercedes-Benz S-Class

    1 Answer

    Need to replace the battery in the car key.


    If it's like my 2006 Z4 key you don't replace the battery. It has an internal rechargeable battery that charges when the key is in the ignition. Not sure how to replace the battery if it won't charge.

    May 19, 2009 | 2003 BMW Z4

    4 Answers

    Replace battery in key


    If you have the diamond shape key, the battery is not replacable. If you have the square shaped key, the battery is replacable, but that is obvious because of the screws on the back of the remote.if you have the diamond shape key, it is recharged when its inserted into the ignition. If the key hasn't failed, taking a long trip 60 min. or longer should recharge the battery. If there is no change in the operation of the key after your long trip, most likely the key has failed and needs replacement.

    Apr 26, 2009 | 2001 BMW 325

    3 Answers

    What battery goes in remote entry key for 2001


    I just took my 2001 Lexus ES300 key apart and the battery is a CR1616 3V

    Apr 22, 2009 | 2001 Lexus ES 300

    1 Answer

    KEY WILL NOT UNLOCK DOOR AFTER INSTALLING NEW BATTERY


    First dissconect the battery and try to turn door key with no voltage applied to vehicle. This will ensure it is not a damaged key. If door locks turn, reconnect battery. Hopefully during disconnect your electronic door locks de-energized. If keys don't work with battery disconnected then the fault doesn't have to do with your battery or electric locks at all. If they work with a disconnected battery and not with it connected you are have an electrical short, either in a switch it's self or the wiring to the door lock switches. In this case I recommend taking the vehicle to a shop for repairs, electrical can get in depth without proper tools and diagrams

    Nov 24, 2008 | 2003 Chevrolet Silverado 1500

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