warning lights | Ask Honest John

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Most recently answered warning lights questions

I can't open my boot of my Mercedes-Benz E Class electrically - is this a known fault?

I've got a Mercedes E320 CDi and I've started to get warnings on my dashboard display concerning the left and right hand rear number plate lights and third braking light. The frequency of these warnings...

Is it legal to sell a car with a warning light on?

I seem to have stumbled upon a whole world of hate this past week. I recently just passed my driving test and purchased my first car. The car in question was a Volvo C30 R Design. I don't know diddly about...

My car went into limp mode with no warning - why has the DPF filled up so fast?

The DPF on my 2009 Jaguar XF was professionally cleaned after going from amber to red. The car had done high mileage (104,000), so I was kind of expecting it. 13,000 miles after the clean, it went straight...

Why is my Renault Trafic emitting white smoke and going into limp mode?

My Renault Trafic 1.9 DCi glow plug light comes on and goes into limp mode. It also wont rev over 2000 and emits lots of white smoke from the exhaust. Can anyone help?

Is there a known issue with blocked injectors in the Citroen DS4?

I have a 2011 Citroen DS4, purchased two years ago. Since January, the engine light keeps coming on and the car will go into limp mode. I had the emissions filter 'fixed' in January by the dealer from...

Why did my Suzuki Baleno flash up a combination of warning lights?

My brand new Suzuki Baleno is brilliant to drive; it's comfortable, economical, fast and safe - however, a combination of warning lights suddenly illuminated a few weeks ago. I think that it included a...

BMW X3 triad of lights, 4X4, ABS and Brake

I have a 2006 BMW X3 2.0d sport, bought through finance. I've had it since 2014, but since the DPF issue I seldom use it. In the first quarter of 2015, I used it on a long run but noticed an intermittent...

The garage suggests my Skoda Fabia needs a new EGR - what do you think?

I own a 2004 Skoda Fabia 1.4 and I drive about 3000 miles per year. For the last three years the engine management light has stayed on, fault showing as EGR valve. This has happened three times and been...

What does the glow plug light on my Volkswagen Passat indicate?

I bought a used Volkswagen Passat Estate in Oct 2016 (124,000 miles on the clock) with a 12 month warranty. On the first motorway drive the glow plug warning light came on. I returned it to the dealer...