I have a basic cobra alarm it worked great but I recently had my transmission Replaced and now my alarm does not come on at all the auto shop says they reconnected everything after my tranny work was done .
I installed new batterys the light on the remote comes on but there is no response through my alarm no blinking lights or sounds How can I resolve this issue?????

Raymond, July 2007

BRILLIANT!!! worked perfectly for my 1998 Golf. Thanks

R!cardo, July 2021

Same hapened to my golf mk4, followed advice, worked when I pressed button twice! Thank you so very much

Heidi, October 2017

My '98 Shogun wouldn't unlock with the fob this morning, so I used the keys and set the alarm off. I tried a few times (probably to the annoyance of my neighbours) and changed the battery (indoors) to no avail. I then read this! I changed the battery beside the driver's door, pressed the big button twice and it worked! Thank you! One happy person :-)

Alana Thompson, October 2016

that worked for me putting the battery in the remote as i was stood at the side of the car , the remote started blinking and then i pressed the big button twice and the doors locked , spot on advice

ALAN THOMPSON, March 2016

Just done this reset on my shogun .alarm hasn't worked for two years .
Your fix worked second attempt paul , cheers.

dave stevo ., October 2014

when change the battery in the cobra remote control, you need to go near the driver side of your car then only you insert that new battery and you will then see the blinking in the LED...then press two times on the big button.Done

Ray Hue, February 2013

great help mine now works

had car off road for 3 months car battery disconnected and re connected battery and alarm did not work but after this does now
cheers

shaun, August 2010

Still works.. thanks

Just wonder why Cobra do not put this info on their web site

Patrick, May 2009

Thanks Paul, worked as a charm.

Stj, May 2009

Thanks for the tip about holding the 2 buttons. My car has been without an alarm for weeks after changing the batteries.

Much appreciated

Alan

Alan, March 2009

Thank you, Paul mine was not working took your advice and alarm and remote locking back on fine.

june, October 2008

Do you have the remote with two grey buttons or has it got one yellow and one green?

If the first with two grey buttons then this is probably what you need to do.
Assuming the remote appears to work, ie the light comes on.

Press and hold both buttons together, the light will flash as you do this, wait till the light goes off (about 10sec) let go of the buttons and the light will come back on, press the larger of the two buttons, the light will flash then go off, press the same button again and it should arm/disarm.
If its the other type with the green and yellow buttons it may be a build up of carbon on the PCB, open it up and clean where the button makes contact with something that wont damage the circuit, or possibly need reprogramming.

Paul, July 2007