Hello,
Some times going to the car after being parked (even not for long), it does not unlock from the fob, you have to use the key and when you use the key only the door you stick the key in unlocks while usually all doors unlock automatically. When you get into the car and turn the ignition car starts normally. This happens like 2-3 times a years so I did not bother with it because if I take it to the mechanic everything would appear to be normal.
Now yesterday and today the same thing happened but the car would not start, you would turn the key and the car would appear dead no sign of life, the dash would not light. To start it you have to turn the key keep it turned for like 10 secs and the car starts. This is a new behavior that just started yesterday this made me wonder so I decided to post here.
Battery and alternator are new and I have also tested them with a battery tester and everything seems OK. Is it immobilizer related ? What could the problem be ? if you want further details let me know.
When this happens radio stations are lost and clock resets
My car is a 2006 Daihatsu Sirion
Update
Yesterday I cleaned the battery poles and connectors with a bit of sandpaper. Tested the car late at night and it worked fine and today morning when going to work it started OK.
Seems it needed some cleaning even thought the battery and connectors did not look dirty or corroded. It could be a coincidence because the issue is known to come and go, so I will monitor the problem and let you know if it comes back.
Update
After cleaning the battery terminals, connectors and ground points on the car with sand paper on the Dremel the issues seem to be gone for now.
To be 100% sure this will never happen again I crimped and installed another ground cable, the one on top with the heat shrink, I would install heat shrink on the other wires as well but I run out.
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Your fob is croaking
time for a new battery in it
or a new fob
or a new car
get the fob checked first, it's cheaper than a new car
I don't think its the fob. The car appears DEAD at times no electricity, no lights on the dash. you turn the key and no sign of life. Radio stations are reset, clock and OBDII also. A fob can not do that.
I do like my car, it has been very dependable even when issues arise it finds a way to work. Like now it works but not exactly like it should.
I assume its a ground issue somewhere