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Battery changed in key fob now will not start

Have changed the key fob battery and went to start the car and engine management light just flashing engine turns but will not start its a corsa 1.2 sxi 03 plate

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You have lost programming, contact your local dealer.

Posted on Jan 18, 2017

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I have a 2007 ES 350. Changed key fob battery,now nothing works. Only immobilizer security light is flashing and engine start stop button has amber colored light on


Be sure to use the correct battery, properly in place, clean the key contacts , See owner's manual for additional information.
There are specialized locksmiths for car keys

Oct 02, 2014 | 2007 Lexus ES 350

1 Answer

My immobilizer does not recognise my key fob


Put key in ignition.
Press unlock button on key fob.
Immobilizer should now recognize it, if it was original fob but car or fob battery was changed or is now low.

Saabs are particular about batteries that are otherwise good, but just below 12 volts.

Mar 29, 2014 | 2005 Saab 9-3 1.8

1 Answer

Mazda mx3 japanese import 94 reg key fob died, i changed the battery but it will not now unlock the car, the doors are deadlocked so the key wont unlock the doors either, can i re-sync it from outside? Or...


Whether your key fob is damaged or just has a dying battery, there is a way for you to unlock your vehicle and start the car. Just follow the steps below:
  1. Press and hold the auxiliary key release button on the underside of the key fob.
  2. Grab the looped end at the top of your key fob.
  3. Pull out the auxiliary key.
  4. Use the auxiliary key to unlock the driver's side door.
[Read more: What to do when you're locked out of your car]

HOW TO START THE MAZDA 3 WITH A BROKEN OR DEAD KEY

Now that you've managed to enter the vehicle with the auxiliary key, you're going to need to know how to start your Mazda 3. At this point, the auxiliary key can be put back into the key fob, as the key fob can still be used to start your vehicle. This will only take a few extra steps.
  1. Make sure the shifter is in the Park (P) or Neutral (N) position.
  2. Depress the brake pedal.
  3. The light on the engine start button should flash green.
  4. Take your key fob and touch the back of it to the push button start.
  5. When the green light on the engine start button stops flashing and remains continuously illuminated, press the push button start normally to start the engine.
  6. It is recommended you allow the vehicle to idle for about 10 seconds.

Mar 03, 2018 | Mazda Cars & Trucks

1 Answer

Fob battery went flat now omega won't start


from what iv heard when fob battery changed the fob needs to be re syncronised with ur car.....try main omega main dealer for info

Feb 07, 2013 | Cars & Trucks

1 Answer

Key fob alarm problem golf vr6


the immobiliser needs to be programed with diagnostic equipment

May 23, 2010 | 1997 Volkswagen Golf

3 Answers

WONT START.SECURITY LIGHT FLASHES WHEN TRYYING TO START


Anti Theft System - inmobilizer is actovated. Need disarm to start engine. Have you another key and fob? Try lock/unlock cycle with new key + fob. Your key may be corrupted.

Try also just unlocking the car with the key (not the fob) as soon as you unlock the door put the key in the ignition immediately and see if the car starts.

If you have your radio code it may be worth trying a total reset (leave the car unlocked) disconnect the battery and leave for 20 mins. then reconnect.

Hope help with this.

May 05, 2010 | 2000 Jaguar S-Type

1 Answer

First: alarm went off on its own.(mazda 6 2003). Now when locking and unlocking car sometimes indicators flash and sometimes not. Now red immobaliser light is flashing on dash when driving, then stops...


there is often a small back up battery in the immobiliser unit itself, if you can locate this unit and replace the battery with the ignition on / engine running, then it should not need recoding and work fine after that. The other thing that could be wrong is the key battery (if the fob has one) or the transponder chip in the key head. If the key signal is low the immobiliser lamp will light during driving, but this does not explain the alarm going off. That is more likely either a poor vehicle battery, alarm / immobiliser back up battery, or another electrical fault such as water leakage into a tail-light or even the alarm unit itself when it rains. A lot of alarms are voltage sensing and when the vehicle is parked they will alarm if the battery voltage changes for any reason, though not during driving so the battery in the immob is my first choice to look at.

Oct 24, 2009 | 2003 Mazda Mazda6

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

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