Just tried to open my S2000 (MY07) with the keyfob, nothing ! The car's been stood for 6 days, which is not unusual so the battery's probably flat.

Reading some of the historical posts on this subject I noted that several of you have had the alarm go off when turning the key in the ignition so I didn't want to go diving in there as it'll just pi$$ off the neighbours. So my question is, would it be best to have jump leads attached from a donor car first and then turn the key, or will the alarm go off anyway because i've opened the bonnet? And if the alarm going off with the car started, is it just a matter of deactivating it with the fob?

Any advice you can give is appreciated

Dave.

 

Just do it during the day, shouldn't annoy the neighbours too much, the alarm isn't that loud!
Anyway:
Have donor car running.
Connect jump leads (in this order: your car +, donor car +, donor car -, your car -)
This should get some electrics ready, give it s few secs then "unlock" your car, this shold deativate the alarm.
Let the two donor car run for a few minutes to feed your battery a bit.
Re-open the car (to deativate immobiliser).
Try starting.
If it doesn't start, then let the the donor car carry on charging for another few minutes - it depends on "how" dead your battery was.
Drive for a good 15/20 minutes, prob best keep it local in case you stall and can't re-start as you don't want to be too far from home not able to get anywhere! Keep phone on and hope your donor car mate can come and get you.
It can take a while to re-charge the battery, depends on what state it's currently in hence a good drive.

I would expect the battery to last more than 6 days but depends on how low charge it was when you stopped using it, i.e. if you've been doing a few short journeys prior etc. Only 2 years old too so if continued problems, then maybe a trip to Honda to get a replacement (should be covered under warranty). I suspect it's a one off though....

I've not been driving for the last few months (back problems) so mine goes down (although takes 2/3 weeks) but fortunately FIL has a battery charger so I leave that on overnight, this is probably the best option if leaving the car for more than a week at a time on a regular basis.

 

If its an option at all I would take the battery out of the car and charge it for at least 12 hours. That was the battery will be at full charge and you also don't risk frying any electrics with the jump start.

 

Good point i think thats what fried my Alarm.

good luck i would take the battery out and charge it frist.

The alarm should go off if the battery is low anyway I think.

 

I may be wrong on this this one, but I vaguely remember something about connecting the earth lead directly to the engine block. I'm away from home at the minute and can't check the hand book, but I seem to remember reading this some where.

 

The engine is earthed to the chassis, as is the battery, so you can connect the the earth lead to the engine, it makes no odds if you connect it to the negative terminal or the engine.

 

If the battery is flat after the car standing for 6 days you have a problem of some sort with either the battery or the electronics in the car.

Is there anything electrical fitted to the car that's non standard?

If not i'd be taking it back to the dealer under warranty.

 

Have I read this right?
Or have your fob batteries just gone flat? Have you tried starting the car?

If the car battery is flat its either not taking or sustaining charge, or there is a drain from somewhere....