Question about 2008 BMW 535i Sedan

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Is there a separate battery for car alarm on BMW 1995 compact

The fob no longer works ,so every time I open doors orstart engine the hazard lights flash for about 20 seconds ?

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  • BMW Master
  • 1,013 Answers

Do you have the diamond shaped key? If so, the battery isn't meant to be replaced (it charges when put in the ignition). You have a few options:


1. Buy a new key from the dealer. A new key costs about $250 and they'll probably have to order it.

2. You could try to cut open the key and replaced the rechargeable battery. Your key wasn't meant to be opened so it will be tough.
If you go this route, you'll want a new cover since it now looks terrible. Look on ebay and buy diamond shaped blank key. There are 2 type; one with a notch and one without. Get the blank key cut and move the internals from your old to your new key.

If you don't have the diamond shaped key, look for the seam and a small notch on the side of the key and pry it open to access the battery. You can find the battery (the correct size is printed on top of the battery) at Amazon.

Posted on Jan 25, 2013

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Posted on Jan 02, 2017

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SOURCE: 2002 BMW 318ti - engine keeps cutting out while driving

right have a check down your local garage if they do diagnostics be about 15-30 pound well worth it tells you a hell of alot more then wht i can say here but on e46s any lil prob tht asc light wil come up its warning you cars not right beware in other words. ive had it on rear abs sensors the asc light is just warning but have them plug it in to diagnostics tht will tell you all about it and whts going on prob sensor somewere let me no how you get on..

Posted on Jan 03, 2009

emissionwiz
  • 76848 Answers

SOURCE: how to activate alarm 2001 bmw 325ix

locking and unlocking with the key is to deactivate the alarm not activate it, the alarm is activated every time the car is locked with the remote automatically, u need do nothing else

Posted on May 03, 2009

  • 12 Answers

SOURCE: how to activate alarm 2001 bmw 325ix

The flashing light does not mean you have an alarm. They were not standard in the 3-series.
You can get one installed or if you want the dealer can program the lights to flash when locking and unlocking doors even with out alarm. This is called "acknowledgement without DWA"

Posted on May 27, 2009

  • 599 Answers

SOURCE: my key fob won't open the doors on my 03 BMW X5

first check the fuse

Posted on Jul 25, 2009

alicantecoli
  • 22246 Answers

SOURCE: E36 BMW 318I CENTRAL LOCKING

try locking and unlocking the car with the key 3 times slowly ,other than that i have no idea ?? another trick is to disconnect battery and join the cables together for a few minutes to discharge any capacitors that may be holding a charge in the computer..Only other thing i can think of is the main dealers who have the right connectors and software to re set it all .sorry i havent been of any help

Posted on Aug 05, 2009

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2 Answers

How do I drive my car if the remote alarm/keyless entry keychain fob no longer turns off the alarm?


The dealer usually has a contractor that deals with remote entry systems on scheduled days. Most places like carmax do too for about $75-100. Try carmax first. I'll bet you'll save money.

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Insert key into and remove it from ignition more than six times in 10 seconds. When the hazards lights will flash twice insert key into ignition and turn to ACC position.
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Should be all working again.

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Key fob has a dead battery does the remote open an close side doors remote door lock work if not probably dead battery in remote also if battery was changed may have to reprogram remote system
that would have to be done by dealership they have to go into the program an relaern the remote

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Hi, if the car stay for long time the computer box lost memory. Now is not reading the key. You need to program your key again by BMW manufacturer. Also on bmw the alarm is connected to computer box too.

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1998 altima key fob won't lock doors and alarm doesn't work


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I have a bmw 318i s reg every time we open the door the hazzard lights start flashing the car will start but the hazzards come on whilst driving every thirty seconds the fob no longer works so are using...


That's unusual if the fob is related to key less entry. If not disregard this message but my repair manual states that the batteries are always charging whilst the car is on with the key in it. I've obviously have been trying to get the information for my Screen for too long.

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get in the car and manually lock the drivers door with the door switch.
put the key in and out of the ignition about 10 or 12 times until the hazard lights flash once.
turn the key to the ignition setting so all the dash lights are on,but do not start the car.
click the lock button on the remote fob.the hazards should flash once to confirm.
turn off ignition and remove the key.
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if that does not work,the dealer can reprogram the fob with the obd diagnostic system.

May 26, 2009 | 1995 Nissan Maxima

1 Answer

Won't start after cleaning battery terminals


Sounds like you have an aftermarket alarm with starter disable. By disconnecting the battery the alarm reset and the defualt setting is usually to set the alarm automatically (active arming). You have three options..
A. If you have the key fob that went with the alarm you can disarm the alarm.
B. If no key fob is available you can disconnect the battery again, turn the ignition key to the on position and reconnect the battery. This usually doesn't allow the alarm to set and allows the car to start.
C. Remove the aftermarket alarm system. This is usually the long term fix i recommend if the fob isn't available. Option B should get you going though.

May 09, 2009 | 1993 Toyota Corolla

1 Answer

Changed battery alarm won't turn off engine starts fob opens doors


if it is a aftermarket alarm, get rid of the alarm, or unlock and lock door w/ key am alarms are a problem when they go awry

Oct 02, 2008 | 2004 Chrysler Voyager

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