Although immaculate looking and low mileage the car has had a hard life. It had a new offside quarter panel fitted around 3 years ago. If it's not a common fault i'm wondering if the two things are related. Using fog lights in drizzle and rain is not allowed, and you are even eligible for a fine from the police if caught. So, make sure that you switch off your fog lights once the fog has lifted. How Should You Use Your Car’s Fog Lights? Well I haven't seen that on an 8K A4, but similar problems on the 4F A6 are common due to a burnt out earth pin on the rear light unit bulb holder and its plug but this gives a dash warning. Is the bulb warning coming up on the dash? We are also seeing this earth terminal issue on the 8J TT now.No warning on car at all. Have changed both bulbs today and it's exactly the same. Light on the switch comes on for around a second then goes off.

Having set the scene, let’s move on to considering how this might affect you and what you can do about it. What to do about this if you’re in the market for a Japanese import? I have isolated the OEM wiring circuit diagrammes for the rear fog, including the position of the relay. An LED strip on the front of some cars are called Daytime Running Lights (DRL) and have been fitted to all new cars in the UK since 2011. They turn on whenever the car is switched on and are there to make the car more visible to other road users. They do not perform the same function as front fog lights. The dim glow is extinguished when the lights are on - and then all the other switches attain a dim glow as expected.

You MUST NOT use front or rear fog lights unless visibility is seriously reduced (see Rule 226) as they dazzle other road users and can obscure your brake lights. You MUST switch them off when visibility improves." Bearing in mind fog lights are probably used infrequently for the average motorist and bearing in mind they are low down in the bumper so get the worst of the road water thrown at them, its probably just a bulb blown (which can go at anytime on any car).

It must be secure and be able to be operated from the normal driving position. It should have a ‘tell tale’ i.e. a light that comes on when the fog lights are on, to remind the driver of this fact. Most of the time, the light is built into the switch. This means the switch can’t be hidden out of sight. Putting a voltmeter on the bulb holder tells me that only 8 - 9v of poweris reaching the bulb holder. Here is what your fog light switch might look like, if it is on your steering wheel: Front Fog Light:The symbol for the front fog lights, as stated above, is an oval-shaped lamp with three diagonal lines intersected with a wavy vertical line to the left of it. Basically, the argument FOR dual rear fogs is centered strictly around using them ONLY in cases of severe fog. The dual set up improves visability for the following driver, (he will see you sooner), and two lights set far apart gives depth perception to the following driver which a single light can not give. New 21w bulbs fitted to the rear bulb holders and all made clean and bright (they weren't bad to start with).

It is legally required to have at least one rear fog light, in the UK, so every car will have at least one rear fog light. Since front fog lights are not a legal requirement, most car manufacturers only offer them in the high-end models. They can be found below the headlights. What Is The Difference Between Daytime Running Lights And Fog Lights b) use dual colour led bulbs in reverse lights, extending cable from existing fog lamp loom - doable, and really easy to replace bulbs/maintenance if need be.I’ve read a few posts recently, in which people are asking “where is the rear fog light?” or alternatively “where is the rear fog light switch?” This is my response to reading those posts, and it may turn into a small rant but I hope it is useful all the same. It may also help answer the question I see being asked many times: “what is this extra switch for on my dashboard?” Fog lights are present on the rear and front of vehicles. Since front fog lights are not legally required, many manufacturers do not provide front fog lights. as the original fog bulb is,just like the old style bulbs you got for tail and brake lights,where one bulb with 2 different sized fillaments,were you tail light and brake light,as said combined in one bulb For many generations citizens have driven in the USA without Rear fogs, and unless you live in area that has cronic fog, or blinding snow storms etc., they are of no use at all. The whole purpose of fog lights is so that you can see the road on which you are travelling, with clarity. This is because we do not have a compatible climatic condition in the UK, and are sometimes prone to experiencing extreme temperatures, which also includes fog, all of which make driving extremely difficult. Front fog lights can cut through mist, fog, rain or even dust as they are mounted lower down than headlights in the front of the car. Fog lights can also be used to drive in winter, when visibility is low, which is a major winter driving tip.

If your vehicle does have front fog lights, these are usually found below the headlights, and illuminate the road directly in front of you. The IVA inspection tests to a different brake performance requirement compared to the MOT but it will give you an indication that the brakes work as intended. When I unplugged the wires connecing the rear fog lamp switch to the loom, the voltmeter was still reading 8 - 9v on the rear bulb holder. d) open up and cut glue together the original retroreflective lens to the replacement led lamp - feasible if slightly more cumbersome. when i took out the 3 rd diode,furthest to the right,my head lights work,but the alarm to tell me ive left my lights on,no longer worked

It is small and square in shape and sits on the right hand side of the engine, to the right of the battery, forward of and slightly lower than what looks like the ECU. stop in the correct position at a junction with limited visibility and listen for traffic. When you are sure it is safe to emerge, do so positively and do not hesitate in a position that puts you directly in the path of approaching vehicles. Having read The Road Vehicles Lighting Regulations 1989, which state[if I read them correctly], that the minimum separation distance between 2 red reflectors is 600mm and the maximum distance from each the side of the vehicle is 400mm.These dimensions apply to the Alphard. Of course fog lights are a useful extra tool when visibility is poor, but they won't make you invincible. Use common sense - if you can't see very far ahead, slow down, and keep a good distance to the car in front of you. If there's fog, the roads are likely to be slippery, too, so give yourself more room to brake and slow down. When NOT to use fog lights