Hi
This year I have decided to store my car over winter as as the UK winters are not good for these cars. I have removed the battery, charged it and stored it in my dry warm office. I was wondering if anything electrical in the car will be effected after being turned off for six months, the led speedometer for example?
Thanks for all the replies…..
Where are you storing it?
I’ve just tucked mine away for the winter with the battery on a CTEK conditioner in the shed by the house. Our garage is remote with no electricity.
Been doing this for the last 4 or 5 years.
The only thing affected when the battery is reconnected in the Spring is the DSC warning light which needs resetting - a couple of turns from lock to lock on the steering wheel - and then it’s ready to go.
No problems with the speedo and the radio doesn’t have a code
You need to keep the battery on a maintenance charge to stop it degrading. I usually charge mine not 24/7 but for a period of 24 hrs say each week during non use in winter.
Pump the tyres up to around 35 psi, strip clean and lube the brakes and park it up with the handbrake off. Doing this will prevent the brakes from seizing during non use.
Cover the car with an old sheet or two if no purpose made cover after washing drying thoroughly. Should be ok as long as you don’t get rodents in the garage or storage place, they love making nests especially in or around the engine bay. I’ve had that in the past.
Popped my NC into hibernation mode yesterday.
As above , cleaned , dried, 35psi per tyre, topped up with V power and two bottles of fuel stabiliser.
30 minutes of running to mix the stabilisers through.
6 small dehumidifier tubs (the type from any pound store or the likes)
4 placed in cabin 2 in boot.
Battery off, handbrake off in neutral, wheels chocked.
Close the garage door …..sorted 
As far as rodents, depends on your outlook I suppose…..as in traps or baited block of food placed in garage.
In my garage under a car dust sheet. I have been advised to pump the tyres up high presumably to avoid flat spots.
The only car that got attacked by a mouse was parked on the drive….. they can do a lot of damage.
Thanks….it is important to store batteries out of the cold and not on a concrete floor as they will discharge.
Mine stays in the shed on the bench.
Tbh I don’t leave on trickle I just pop the charger on once a month.
My battery was fairly cheap a Lion brand, had it 5yrs and it’s been sound.
Even when I charge it once a month the battery health light has always been a solid green before the charge.
Personally, I think if someone is ‘storing’ their car over winter and it isn’t garaged, imo, 4-5-6 months of rain etc on the brake disks, with no spin in the car at all, could lead to pitting and having to get new ones.
My own routine is using the car over winter, but only on dry days and after there has been lots of prior rain to wash away any salt (as in those weeks where it don’t stop raining for a week etc). I find I can usually get a decent drive in about once a month doing it this way. On the drive it’s got the half cover on and wheel covers. Pushed back or forth once a fortnight too to stop flat spots. Battery ctek-ed about once a week. The occasionally spin imo, keeps the car ticking over and cleans all the brakes.
Thing is, there are so many other variables which can occur in that thing called LIFE. Other cars are on the road, and one can do all this manic stuff, and someone on their phone can put an end to the car on your next journey. Ditto, some immediate neighbour might have a minging building ‘project’, which could mean you’d have to get the car on and off the drive most days whilst it’s ongoing, so keep it from the deludes of dust etc
Nice dry garage and touch wood no mice. 
My rule is that once you have put it away do not be tempted to start it up and ‘warm it through’. Wait until you are ready to drive it again before starting it up.
Yes last winter I used to start it up every two weeks and run it for twenty minutes.
Thanks for the advice.
I recently had to use an electric car. We didn’t get on! So after 7 years of sitting in the long grass behind my unit, I dragged my wife’s MK3 back into service. One new battery and started first turn of the key. I evicted the mice from under the bonnet, blew the tyres up, jet washed the green mold off the roof, there was non inside, and off it went for an MOT, which it passed with just advisories. Two new drop links later. 1,500 miles later and several people wanted to buy it. I put two new front brake calipers on, as one became sticky, the day after I agreed a sale and off it went to it’s new owner!
I expect yours will be OK after 6 months.
When you said ‘blew the tyres up’, did you mean new ones?
I’d have thought that after 7 years ‘in the long grass’, you would have sought a reputable tyre fitter to adorn the car with new tyres.
Talk me through the chemical processes of why you thought this was necessary?
I usually don’t use chemical processes, not of the pure Chemistry kind anyway, as criteria in seeking out reputable tyre fitters.
So, no understanding then.
A wise person once said to me, when people don’t understand a product, they default to price. I have found that to be proven again and again.
Yes, we must have met the same wise person.
Were the brake discs still serviceable after that?