Ask Honest John

Most recently answered electrical faults questions
You wrote of a chap whose batteries ran down after three idle days and gave him a possible theory. Actually, the matter is simple to prove - to anyone with any electrical knowledge. You switch off everything...
Last winter I experienced flat batteries with identical symptoms to those experienced by ST, Eltham. I have a '97 Golf TDI, which I have had for nearly six years. During the very cold spell last year I...
I own a 2005 Volvo V50 2.4i with 49,000 miles on the clock. The computer now shows me 'Anti-skid Service - Required'. Reading the blog on the Volvo Forum, apparently Volvo have known of this problem for...
My 2002 Volvo S60 2.0T was serviced by a Volvo dealership earlier this week and I asked them to look at the front passenger door, which will not open immediately on unlocking the car. There is a clicking...
I have been having problems with the airbag warning light since last September on my 50,000 mile 2006 Mercedes-Benz CLK 350. The light has been on for the majority of the time and four repairs have so...
I feel bound to add weight to the letter from RH of Cumbria about the catastrophic failure of certain tyre pressure monitoring systems. In February 2010 three Siemens TPMS valves failed within 24 hours...
Surely there is something fundamentally stupid about the way we are building cars today? I drive a ten-year-old Toyota Yaris, a wonderful little car. My wife has a larger car, a Volkswagen Touran, for...
I recently purchased a 2006 Audi A3 with full Audi service history and 47,000 miles on the clock. The ESP light has appeared and I have had a diagnostic test done. The fault is the brake pressure sensor...
I have recently read your comments on sat navs not accepting UK postcodes. I have this problem on my Mercedes-Benz plus another fault. In spite of pursuing this situation with the Mercedes-Benz dealer...
I just had some repairs to defective paintwork by a professional body shop on my 5-year-old Audi A4. Since getting the car back, the self-levelling Xenon headlights initially adjust when I turn the lights...