When I use the fob to lock the car Volvo v40 1996 model the lights continuously keep flashing so I lock the car with the key

Hi,

Please double check that you're purchasing the key fob from either VW or a different brand than the one that gave you the error. I'm guessing the brand that you have is making defective key fobs otherwise, the new fob should have worked.

Thank you.

Locate your second key fob -
Try using that key fob -

if it does not work, and you can verify the Batteries in both Fob's are good - it could be a couple different things.

1. your security system control box may be 'bad'.
2. their is a 'ring' around the key area that are notorious for going bad and preventing the car from starting - however...they don't prevent the key fob from remotely opening the door locks.
3. The power feeding the security system is interrupted (blown fuse, etc) -

I would do the following:

1. Check the second fob and see if it works - If it does you have a bad #1 key fob (or battery).
2. Check ALL of the fuses (in the dashboard Drivers side access panel) AND under hood - Check even those not labeled security - as there are often fuses that feed more than one item, but are only labeled for one item.
3. Try going inside the car, shut all the doors, and lock/unlock the car five or six times using the interior control - I believe this is supposed to reset the unit.
I could be wrong - you can look this up. It might be that you have to do this with the key fob but I can't recall.

Give those things a shot. Also, make 100% sure all of the doors, hood, trunk, etc are fully closed.

I'd just about bet you have a bad key fob - finding #2 is the key here.

Beyond that - it's probably a trip to the junkyard for a new security module and matching set of key fobs - But long before getting involved in that - I'd bet you have a bad key fob or blown fuse -

Security Modules and key fob's are not universally replaceable, are extremely difficult to work with (for those without VIDA [Volvo Diagnostic software] and programming capabilities) and have to be programmed to work with the control unit to which assigned.

After searching the forums, it looks like only a dealership can program the remote codes...

one of two things are going on.
1. The door lock cylinder is worn out needs replacing.
2. It's not recognising the key fob. Try this..
you can use your key to open the trunk ,thankfully! , try and unplug the battery, and then connect the two wires that go to the battery together for about a minute, and then reconnect them both to the battery. It's call a hard restart, and it might fix your problem.
won't mess anything up by doing this.
Hope this helps a little.

Hi there my name is Brandon I am a electrical and mechanical engineering technician did you program the th... system and the key and what bout the ecu (is engine control unit it has to be problem) ecu is probably not sending start to cam and crank sen... I would put money on it or the th... system not taking the keys code for it

Hello, this is quite normal for lights to flash, Imagine being at a Cinema or Concert and half a dozen vehicles same model/colour parked in the area you thopught you left yours? Hitting the fob helps find your own vehicle, also lets you know that the vehicle is either Locked or unlocked.
Hope this FixYa's problem.
Paul 'W'

try this ... turn the key on and off 5 times fairly rapidly until the red light on top off the dash flashes. then quickly press the fob lock or unlock button.

What year(s)?