isetta

Thanks for replies. The main car battery has not been tested. Car is 9 yrs old. Owned car 3 yrs. Don’t know if battery is original but seems likely. Car starts fine and stop start works. I have now cut alarm siren open. Pic of it attached so anyone having problems with this can see model number and the inside - 2 x AAA rechargeable batteries which slot in - not soldered in. One of these reads 1.33v , one at 1.27v in series so total 2.6v so doesn’t seem too bad. But I replaced the batteries today with new energiser rechargeable batteries. Alarm now seems fine, but it’s probably too soon to be sure. Will update if it turns out to be dodgy still. And I will check the current drain when car locked up. Thanks for replies

Posted this in Octavia by mistake today (I am new to BRISKODA) - I am at the bottom end of the post https://www.briskoda.net/forums/topic/458298-alarm-siren-battery-replacement/page/4/#findComment-6007729

Hi, I’m new here but my query is related to the problems on this particular post. Yeti 2 litre diesel, 2017 2wd. Alarm goes off within about 30 seconds of locking car. So for a while I haven’t been locking the car which is not ideal. Someone put a fault code reader on it a while ago as a free favour and said the fault is the backup battery in the alarm siren. I did not see the codes on screen myself. So on Friday I decided to disconnect the alarm siren. I did wonder if all would be well or if the indicators would still flash like it is in alarm activated state. Indicators did not flash after locking it so I thought all is well (I don’t mind the car having no alarm). But on Sunday morning I found the car battery is flat. A) Can anyone tell me if disconnecting the alarm siren causes some other problem that causes adverse battery drain? B) I know that when the car is locked there is always some current being used - can anyone tell me what amps or milliamps is the normal drain when car is off and locked . I do have an ammeter so can check mine to see if it’s more than normal, whatever normal is. I have not opened up the siren to see condition inside but I would have the capability to and or replace the battery pack, but ideally I would rather just have no alarm so as to avoid future problems with it. Look forward to hearing from you with any expert helpful comments on A and B above Update: just realised I have posted in Octavia, not Yeti but I think probably my query is not 100% Yeti specific.