Our second key fob is not working.  There is no red light when you press any button.   The second key fob battery has been tested with a meter and shows 3.0 v.  I have changed the second key fob battery for a brand new battery which also shows 3.0v and still no red light when you press a button.  The second key fob resides in my wife's handbag who does not drive so the second key fob is not used to start the car and we do not know when the second key fob was last used to open/close the doors or how long the red light has not worked - we just spotted this today.

 

The first key fob works fine.

 

Any suggestions?

Take it back to dealer..

 

 

Before you go back to the dealer, try this.  I had exactly the same problem a few years ago with a Fabia which I took back to the dealer the same day I bought it.  The mechanic simply locked then unlocked (might have been the other way round) the car manually using the (faulty) key in the driver's door lock.  This somehow programmed the key to the car and it worked fine afterwards.

As above key probably just needs re syncing. From owners manual...

 

 

Thanks for the replies.

 

I will try the resyncing but am not optimistic.

 

When you press any key on the working key fob, you get a red light on the key fob which indicates the key fob has sent a command out (in the same way as some tv remotes work).

 

The bad key fob emits no light whatsoever, as you might expect if the battery is totally dead, and thus I expect no 'command' to the car.

 

So looking like a phone call / trip to the dealer and hopefully a warranty FOC  item.

Bit concerned when you say it resides in your wife's handbag. My first thought was something pressing against the fob and draining the battery but you've dismissed that possibility. Could some liquid or something have spilled in to the keyfob? Of course it could just be a faulty fob.

 

As other say, it sounds like a visit to the dealer is required.

Problem solved.

 

It would appear not all batteries are equal.

 

I bought some brand new batteries today and hey presto the key fob now emits a red light when you press any button and now works ok.

 

The absence of the red LED in the keyfob is deliberate, a tell tale to the driver that they key fob battery needs replacing, sooner rather than later especially if the car is equipped with KESSY...

 

1 hour ago, silver1011 said:

The absence of the red LED in the keyfob is deliberate, a tell tale to the driver that they key fob battery needs replacing, sooner rather than later especially if the car is equipped with KESSY...

 

to be honest with the KESSY I have never looked at my fob as it is always in my pocket. I have seen on another that the dashboard also warns you if battery needs replacing but I never saw this pop up before my ordeal of not being able to get into my car! 

There may also be a batch of faulty key fobs because my dealer has ordered a pair of new key fobs for our 2 year old SEL KAROQ when both fobs became troublesome despite several new batteries. This has caused us on one occasion to call out the AA to gain entry to the car, switch off alarm and eventually start it (key not detected shown on maxidot) so that we could drive it to the dealer for investigation. The dealer decided after finding no fault codes that both key fobs were faulty and this means waiting 2 weeks for the new key fobs to arrive and in the meantime we just hope the fobs keep working until they are replaced under warranty.

On 06/01/2020 at 17:44, BramptonTrev said:

Problem solved.

 

It would appear not all batteries are equal.

 

I bought some brand new batteries today and hey presto the key fob now emits a red light when you press any button and now works ok.

 

 

As a matter of interest, BT, what brands were the old/new batteries, please?

On 22/01/2020 at 10:18, StEdmund said:

 

As a matter of interest, BT, what brands were the old/new batteries, please?

 

The key-fob had the

(1) original Skoda battery (registered 3.0v on multi-meter but no red light on key-fob) which I replaced with

(2) a battery from a multi-pack probably from Poundland and would be 2+ years old - registered 3.0v on multi-meter but no red light on key-fob and replaced with

(3) brand new battery from a JCB multi-pack (£1 for 6 assorted) from Home Bargains or Wilko - and it worked first time no problem and no resync.

Edited 25 January, 20206 yr by BramptonTrev

18 minutes ago, BramptonTrev said:

 

The key-fob had the

(1) original Skoda battery (registered 3.0v on multi-meter but no red light on key-fob) which I replaced with

(2) a battery from a multi-pack probably from Poundland and would be 2+ years old - registered 3.0v on multi-meter but no red light on key-fob and replaced with

(3) brand new battery from a JCB multi-pack (£1 for 6 assorted) from Home Bargains or Wilko - and it worked first time no problem and no resync.

 

Thanks, BT. After 16 months, I still have the original Panasonic batteries in the keyfobs ...... and I have a spare pair of Panasonics at the ready.

On 22/01/2020 at 04:07, shyVRS245 said:

There may also be a batch of faulty key fobs because my dealer has ordered a pair of new key fobs for our 2 year old SEL KAROQ when both fobs became troublesome despite several new batteries. This has caused us on one occasion to call out the AA to gain entry to the car, switch off alarm and eventually start it (key not detected shown on maxidot) so that we could drive it to the dealer for investigation. The dealer decided after finding no fault codes that both key fobs were faulty and this means waiting 2 weeks for the new key fobs to arrive and in the meantime we just hope the fobs keep working until they are replaced under warranty.

Went to put wife's umbrella back into the front passenger seat compartment today with the spare key and yes you guessed it no red light on the key fob and no entry to the car. Just as well 2 new keys are on order under warranty because this debacle is really winding me up.

1 hour ago, StEdmund said:

 

Thanks, BT. After 16 months, I still have the original Panasonic batteries in the keyfobs ...... and I have a spare pair of Panasonics at the ready.

 

Im very similar - 21 months with a pair of Panasonics ready. Wringing the last drops of life from the batteries.....

 

Edit - Thinking about it - its silly to have new batteries unused for a couple of months, giving the cost of them. Just put them in the fobs. Very straightforward.

Edited 25 January, 20206 yr by OldKaroq

Not a good idea, the fobs use battery power even when the buttons aren't being pressed, KESSY eats batteries. The best place for the spares is in the glovebox along with a small flat screwdriver to open the keyfob if stranded.

Anyone know if the spare KESSY keyfob could with time lose the code if kept with no battery installed?

Yes, it can lose its synchronisation, in which case you need to replace the battery and follow the procedure in post #4. 

On 25/01/2020 at 18:30, silver1011 said:

Not a good idea, the fobs use battery power even when the buttons aren't being pressed, KESSY eats batteries. The best place for the spares is in the glovebox along with a small flat screwdriver to open the keyfob if stranded.

 

Prevention is better than cure, surely? Personally  I would rather not run the risk of being locked out of the car, and Im OK with a minimum 21 months battery life. Its a tiny cost considering the overall cost of the car.

It depends how you use your keys, our second or spare key is exactly that, and stays in the house.

 

You shouldn't ever be locked out of the car, the KESSY key fobs have a hidden key blade which can be inserted into the external drivers door handle and the car unlocked in the old fashioned way.

 

The spare battery stored in the glovebox will deteriorate far slower than if it were inserted into the spare keyfob, the idea being once inside the car you'll have a fresh unused battery to be able to start the engine.

Update on our 2 faulty key fobs for the wife's Karoq some good news at last. Got a call from the dealer yesterday to say the NEW keys had arrived and now arranged this Saturday morning (takes 30 minutes apparently) to get them coded to the car so fingers crossed no more being unable to unlock the car or even not being able to start it. Must have been a batch of faulty key fobs for Karoq's made in the 4th Quarter of 2017 like our car. All under warranty of course,

Just returned from our local dealer with 2 brand new keys coded to the Karoq’ took about 30 minutes while I waited free of charge under warranty. Hope the replacements are more reliable than the originals (first photo).

Edited 8 February, 20206 yr by shyVRS245
MISSING WORD

Goodness, the time I've spent getting my fobs to work!  I fitted a new, 3.28v, Duracell battery but the fob didn't flash the red light signal when a button was pressed.  However, when I eventually programmed this to my Octavia (and I tried a dozen or more of the recommended methods), somehow, one worked.  I just don't know how.

So now to the other key.  Same replacement battery.  Totally failed to get the red light after cleaning the battery, re-fitting, etc.  So I resorted to trying a 2032 battery instead of the correct 2025.  It would not quite clip into the battery space, so I simply pressed on the side cover that pushes against the battery and that held it ok and the red light worked.  Easily programmed.  But what is it about these batteries and fittings!?  I've ordered two Panasonic 2025 now to see whether this will resolve matters since so many have said this is a better make of 2025.

I swear by Varta.

I had a very similar experience to those above - remote stopped working, no red-light, replacing the battery made no difference.  My remote had been using a cheap pound-shop CR2025, which had worked fine for the last few years.   I tried replacing it with another cheapy CR2025, didn't work.   So I bought a Duracel CR2025 (£2 each) and that did not work either.   So I concluded that the remote must be faulty.   I took it to the Skoda dealer.   The first thing they tried was replacing it with an official Skoda battery - and that worked!   I don't entirely understand what happened there.  The cheapy CR2025 had worked ok in the past and I don't know why the expensive Duracel didn't work.   The moral of this story is to try an official Skoda battery before concluding that the remote is actually faultly - the dealers may even do this test for you free of charge.