i bought my battery just a month ago..varta,i think no problem with it,but just cuz of the immobolizer problem sometimes,signals go on for like 30 seconds,and then disappear..
i was worried that it could damage the accumulator,but i think it is okay.
no i haven't changed my door windows ecu,i have a problem with 1 of my door window,but recently the other one is being closed more difficultly than it did before.
what does it have to do with that i don't understand?
by the way,i bought the car not a long time ago from a neighboor country so i bought it without seeing it.
And the horn was not working,when i brought it to service for diagnosis,i told them,the guy did it in 15 seconds but he told me that it will work with half-power,and it really does work so,not as loud as an ordinary car.
thought it may have something to do with this situation as well..
well,after paying 150 bucks for an accumulator i wouldn't want it to work bad,or cause some problems.