Car alarm even without battery

Apr 20, 2026 Last reply: 2 months ago 37 Replies

It varies by make. For example:

Old Fiats, to leave just the side lights on for parking, press an interlock pin and turn the ignition key back one place before removing key.

Newer Fiats, switch the light switch off and on again with the ignition switch off.

My Renault: on the light switch, select sidelights rather than AUTO (there is no OFF position on the light switch, if you want lights off you leave in AUTO and switch off the ignition!).

My Fiesta was much the same, leave in AUTO all the time, switch to parking lights if want to leave on (though I think that did have an OFF position too).

nib

I now realise I didn't nudge the lever - I didn't cancel it after turning left out of my side road onto the main road then immediately left into another side road then immediately left into the parking space facing the kerb, so no automatic cancellation.

As far as I know, if you park on the road where there are no street lights or facing the wrong way, you are supposed to show lights at least on the road side of your car, red facing the oncoming traffic and white the other way. Once upon a time you could buy little lights showing red one way and white the other which you could plug into the cigarette lighter socket and shut in the window on the traffic side of a parked car. Maybe the facility your car has is a more modern version of that?

I remember such clip-on lights being given to my dad one xmas, never remember them being used though ...

my father had a magnetic one; when powered it stuck to the car bodywork.

I attach a Google satellite view of the corner in question, showing where my car came out of Lower Ct Road, into B284, then into Long Grove Road, then into where the cars are parked, making a circular path.

I attach a Google satellite view of the corner in question, showing where my car came out of Lower Ct Road, into B284, then into Long Grove Road, then into where the cars are parked, making a circular path.

That's ok if your cigarette lighter socket, or whatever it is called these days, stays powered when the ignition is off. A lot of them don't.

Might be worth trying the OBD socket.

Also unpowered when the ignition is off.

Like mine, which powers the dashcam. If I leave the car for more than a few minutes, it powers down, so the dashcam does not record if anybody attacks the car while I am in Morrisons.

No, the rule is you must not park facing the wrong way, after dark. The problem being if you see white lights on a vehicle, you naturally aim to pass the lights, with them to your right in the UK.

Which is why you don't put the lights on...

There's your problem. Go to Waitrose instead.

Waitrose and Tesco are 5 miles away, Waitrose is 18 miles. Not far from the hospital.....

Morrisons should be really quick. Run in, grab what you want, and run out again. No need to pay - they won't stop you.

You would be stopped by the Charity of the Month right in the middle of your path out to the car park, though, as they wave money buckets at you.

Nick their bucket, throw a "Thanks Pal" over your shoulder as you continue on to your getaway car.

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