Key fob locking

[Chay]

Hi I have a 2011 Avensis, I have replaced the Battery in both key fobs for the car and they both worked fine for a day. Neither of them will now open the doors upon pressing the unlock buttons the red light shows and the indicator will flash but the doors won't unlock. 

I have to use the key to unlock the car but the rear doors won't open and the toggle switch on the driver's door won't operate.

The following day the key fob has worked and unlocked and locked the car and the toggle switch works.

It has then stopped working again. Do I need an auto electrian 

[paul9]

I have had issues with cheap eBay batteries, best to stick to fairly fresh Energizers from the local Asda or Tesco. So can you rule out that type of problem?

[Chay]

5 hours ago, paul9 said:

I have had issues with cheap Ebay batteries, best to stick to fairly fresh Energizers from the local Asda or Tesco. So can you rule out that type of problem?

I'm Thanks Paul9.

I got them from Screwfix and the make was Varta may try Duracell and see if they work. Worth a go for a couple of pounds

[paul9]

The ones I had problems with were Eunicell from eBay sellers, and Lidl and Morrison own brands. Those last two were very old stock which I had kept laying around for far too long.

[Chay]

Thanks Paul just ordered Duracell. It opened again before but has stopped working bargain . Fob will always lock but not unlock 

[paul9]

Could be just a bad switch. Cheap fix.

[Chay]

3 hours ago, paul9 said:

Could be just a bad switch. Cheap fix.

Thanks Paul9 do you know what the the part is called please

[paul9]

If it is the old style Toy47 key, then someting like this:

https://www.ebay.co.uk/itm/384014079107?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3Db8bc119178984ab7947503b84e541dab%26pid%3D100675%26rk%3D2%26rkt%3D15%26sd%3D224290996102%26itm%3D384014079107%26pmt%3D0%26noa%3D1%26pg%3D2380057%26brand%3DUnbranded&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A9620cb89-0987-11ed-95c8-2a6562c90f8d|parentrq%3A24986fa61820adb96e42f197ffe8fea8|iid%3A1

That is the two button kit, your Avensis might be three button.

Otherwise, I'm not sure what the newer fobs are like.