Ask Honest John

Most recently answered battery drain questions
My car alarm keeps going off. It lasts 20-30 seconds then stops, and the key fob beeps four times on arming.
I'm not always wanting to drive my 2003 Volkswagen Golf 30-odd miles once every two weeks during this time of year to keep my battery charged due to low usage. I have no electric available within my garage,...
I have a 2010 SEAT Ibiza. Occasionally it won’t start, so I have to jump-start it. Also, if I slam the bonnet down and the car is off, it will not start either. Today, I jumped it and it started but the...
I have replaced the battery in my 2011 Vauxhall Astra (not a stop/start), but the battery saver active warning keeps appearing and shutting the car down when I try to use it. What’s wrong with it? It’s...
My 2012 Mercedes-Benz E-Class has only done 21,000 miles. I've had it from new with the original battery. It stood idle for three weeks and was sluggish to start yesterday. I switched on the heated rear...
My 2018 Citroen C3 only does short journeys on average, say, 10 -15 miles. With the advent of the recent colder weather, the stop-start no longer operates at traffic lights and elsewhere. Any information...
Can you suggest how to care for a long-standing car because of Covid-19. I know about moving the vehicle to stop the tyres getting flat spots, but what trickle charger do you recommend to keep the battery...
My 2010 Nissan Juke will not start. The keyfob works but the ignition doesn't work at all. When pushing start button as usual, it just doesn't start. What could it be?
I haven't used my 2018 Ford Fiesta for three weeks now and probably won't be using it for a few weeks more. Should I start it up on my drive and leave the engine running to keep the battery charged?
I have SORN'd my Jaguar F-Pace during the Coronavirus pandemic. Besides turning the engine over once a week, what else can I do to ensure the efficiency of the vehicle?