Ask Honest John

Most recently answered battery drain questions
My daughter has a 2009 Honda CR-V 2.2 Diesel. Every few weeks the battery goes completely dead and the car has to be jump-started. The local garage cannot find the reason. The battery is only a few months...
What's the ticking noise behind the dashboard when I turn the ignition? The car is a Volvo S40.
Is there a problem with the battery in my 2017 Discovery? It's losing voltage when left parked for two weeks.
The battery in my BMW has failed after 24,000 miles and the car is still in warranty. As an experienced driver, I've made sure the car has had regular runs of 20 minutes or more. BMW says there is no warranty...
Yesterday our Toyota C-HR would not start because the auxiliary battery was completely discharged. The breakdown service started the car and I took it on a 30-minute journey to recharge the aux battery....
If I take my car for a decent motorway run to charge battery, do you have any advice about speeds, gears, putting heaters on etc?
What type of battery charger do I need for my BMW 218 Tourer? It's not being used much and the flat battery light keeps appearing.
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...
 

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