');$businessLinkMobileCount = $('.business-customer-mobile').length;if ($areYouBusinessCustomer.length && $businessLinkMobileCount == 0) {$mobileBusinessCustomerLink.html($areYouBusinessCustomer.html());$('.mobile-grey').append($mobileBusinessCustomerLink);}if (window.aa.helpers.cache.cachedElements.$window.width() <= mobileBreakpoint) {// console.log("smaller than breakpoint");$(".mobile-grey a, .nav-logo a ").attr("tabindex", "-1");$("#mainNavigation button, .mobile-tablet-menu-open ").attr("disabled", "disabled");$('#mainNavigation').addClass('mobile-main-nav').removeClass('desktop-main-nav');$('.mobile-grey').appendTo('.desktop-white');$('nav.aa-mega-menu').addClass('mobile-nav');if (!$('.scroller').length) {$('#site-header-yellow >.wrapper').wrap("
");}$('.mobile-tablet-menu').animate({ width: 'show' }, 30);$primaryHeadingCount = 0;$("#mainNavigation > ul > li.primary").each(function () {$primaryHeadingForMobile = $('
');$firstColumnOfMegaMenu = $(this).find("nav > div > ul:nth-child(1)");$anchor = $($(this).children()[0]);anchorHtmlText = $anchor.html();$primaryHeadingForMobile.html(anchorHtmlText);var primaryNavCount = $(".primary.childrens").length;$primaryHeadingCount = $('.primary-heading').length;if ($primaryHeadingCount < primaryNavCount) {$firstColumnOfMegaMenu.prepend($primaryHeadingForMobile);}$backLinkMobileCount = $('.backLink').length;if ($backLinkMobileCount < primaryNavCount) {$firstColumnOfMegaMenu.prepend('
');}});$('.main-nav').keydown(function (e) {if (e.which === 27 || e.keyCode === 27) {mobileCloseClick(e);$(".left.logo").focus();}});}else if (window.aa.helpers.cache.cachedElements.$window.width() > mobileBreakpoint) {$('.left.logo').animate({ width: 'show' }, 30);$('.mobile-grey').appendTo('.top-header-links');$('nav.aa-mega-menu').removeClass('mobile-nav');$("#mainNavigation button, .mobile-tablet-menu-open ").removeAttr("disabled");$('#mainNavigation').addClass('desktop-main-nav').removeClass('mobile-main-nav');$(".campaign-hero ").parents(':eq(2)').css('padding', '0')if ($('.scroller').length) {$('#site-header-yellow >.wrapper').unwrap("
");}$('.mobile-tablet-menu').animate({ width: 'hide' }, 0);$('button > hr').css({"opacity": "0","visibility": "hidden"});$('.aa-mega-menu').css({"opacity": "0","visibility": "hidden"});$('.right.mobile-grey').show();$('#mainNavigation > ul.aa-main-nav > li.primary > button').keydown(function (e) {if (e.which === 13 || e.keyCode === 13) { /// for ENTER pressconst boxes = document.querySelectorAll('.anchor');boxes.forEach((box, index) => {box.setAttribute('aria-expanded', 'true');});//remove active mega menu from HOVER if open if ($currentHoverMenuItem) {var $primaryNavigationListItem = $currentHoverMenuItem.parent();$currentHoverMenuItem.removeClass('menu-active').css({"opacity": "0","visibility": "hidden"});var $menuUnderLine = $primaryNavigationListItem.find('button > hr');$menuUnderLine.css({"opacity": "0","visibility": "hidden"});$currentHoverMenuItem = null;}applyMenuHoverInEffects($(this).parent());$('#mainContent').removeAttr("style");$('#mainContent').css({"opacity": "0.5","height": "calc(100% - 225px)","width": "100%","visibility": "visible","background-color": "#000","position": "absolute",// "top": "134px","left": "0px","z-index": "1"});$('#mainContent').addClass('menu-base-transition');$currentActiveMenuItem = $(this).parent().find('.aa-mega-menu');$currentActiveMenuItem.toggleClass("menu-active");// $('.column .sub-menu.col').animate({ width: 'show' }, 300);}else if (e.which === 9 || e.keyCode === 9) { // for TAB pressif ($currentActiveMenuItem) {e.preventDefault();var $firstAnchorOfMegaMenu = $($currentActiveMenuItem.find('div > ul:first-child > li:first-child > a')[0]);$firstAnchorOfMegaMenu.focus();}}});//get all last anchor items from all mega menus and attach key down event for Tab transer$("#mainNavigation > ul > li > nav > div > ul:last-child li:last-child a").keydown(function (e) {if (e.which === 9 || e.keyCode === 9) {console.log("tabbed...");$currentActiveMenuItem.removeClass('menu-active');var $nextPrimayNavItem = $currentActiveMenuItem.parent();if ($nextPrimayNavItem) {applyMenuHoverOutEffects($nextPrimayNavItem);$('header#site-header-yellow').css('background', defaultBgColor).removeClass('bg-change');$nextPrimayNavItem.find('button')[0].focus();$currentActiveMenuItem = null;}else {//this will happen for very last anchor of last mega menu. there is no next menu item to focus to//so focus should be move to mainContent$('#mainContent').focus();}}});//for escape key- close the drop down menu if its open$('#mainNavigation > ul.aa-main-nav').keydown(function (e) {if (e.which === 27 || e.keyCode === 27) {if ($currentActiveMenuItem) {var $primaryNavListItem = $currentActiveMenuItem.parent()applyMenuHoverOutEffects($primaryNavListItem);$('header#site-header-yellow').css('background', defaultBgColor).removeClass('bg-change');$primaryNavListItem.find('button')[0].focus();$currentActiveMenuItem = null;}const boxes = document.querySelectorAll('.anchor');boxes.forEach((box, index) => {box.setAttribute('aria-expanded', 'false');});}});//when user mouse hovers from outside menu area then menu needs to animate with set transitions defined in css//but as sson as it enter menu are we need to remove animation transitions which are enabled. so differnt animation menu can be opened quickly$('#mainNavigation > ul.aa-main-nav').hover(function () {removeAnimation = true;}, function () {$('body').removeClass('notransition');removeAnimation = false;//this condition is added because after multiple ESC and TAB press somehow UL mouseout event was triggering and//it was causing background to set default yellow colorif ($currentActiveMenuItem == null) {$('header#site-header-yellow').css('background', defaultBgColor).removeClass('bg-change');}});}if ($('#mainNavigation').hasClass('desktop-main-nav')) {$('.desktop-main-nav > ul.aa-main-nav > li.primary').hover(function () {// console.log("applying hover effects");$currentHoverMenuItem = $(this).find('.aa-mega-menu');//remove menu-active class from active mega menu from keyboard if open if ($currentActiveMenuItem) {var $primaryNavigationListItem = $currentActiveMenuItem.parent();$currentActiveMenuItem.removeClass('menu-active').removeAttr("style");var $menuUnderLine = $primaryNavigationListItem.find('button > hr');$menuUnderLine.css({"opacity": "0","visibility": "hidden"});//If hover element and active keyboard element is not same then set active elment to null . giving preference to hoverif ($currentActiveMenuItem[0] != $currentHoverMenuItem[0])$currentActiveMenuItem = null;}applyMenuHoverInEffects(this);if (removeAnimation) {setTimeout(function () {$('body').addClass('notransition');}, 500);removeAnimation = false;}$('#mainContent').removeAttr("style");$('#mainContent').css({ "visibility": "visible" });$('#mainContent').addClass('menu-base-transition');}, function () {$currentHoverMenuItem = null;applyMenuHoverOutEffects(this);});}applyMenuHoverInEffects = function ($primaryNavElement) {// console.log("In applyMenuHoverInEffects");$this = $primaryNavElement;var $megaMenu = $($this).find('.aa-mega-menu');$megaMenu.css({"opacity": "1","visibility": "visible"});var $menuUnderLine = $($this).find('button > hr');$menuUnderLine.css({"opacity": "1","visibility": "visible"});//change header background with css transition class$('header#site-header-yellow').css('background', '#fff').addClass('bg-change');$('header#site-header-yellow').addClass('menu-base-transition');}applyMenuHoverOutEffects = function ($primaryNavElement) {$this = $primaryNavElement;var $megaMenu = $($this).find('.aa-mega-menu');if (window.aa.helpers.cache.cachedElements.$window.width() > mobileBreakpoint) {$megaMenu.css({"opacity": "0","visibility": "hidden"});var $menuUnderLine = $($this).find('button > hr');$menuUnderLine.css({"opacity": "0","visibility": "hidden"});$('#mainContent').css({"visibility": "hidden",});}}$('header#site-header-yellow .main-nav ul.aa-main-nav > li').each(function () {if ($(this).find(".aa-mega-menu").length) {$(this).addClass('childrens')}});function mobileCloseClick(e) {// console.log("Mobille close called");e.preventDefault();$('body').removeClass("fixed-position");$('body').removeClass('mmenu-opened');$('header#site-header-yellow .main-nav').animate({ right: '-100vw' }, 0);$('header#site-header-yellow.mobilemenu-active').animate({ right: '-100vw' }, 0);$('header#site-header-yellow.mobilemenu-active .scroller').animate({ right: '-100vw' }, 0);setTimeout(function () { $('#site-header-yellow').removeClass('mobilemenu-active') }, 0);$('.left.logo').animate({ width: 'show' }, 0);$('.mobile-tablet-menu').animate({ width: 'show' }, 0);$('.right.mobile-grey').show();$('#mainContent').removeAttr("style");const mobilemenuButton = document.querySelectorAll('.mobile-tablet-menu');mobilemenuButton[0].setAttribute('aria-expanded', 'false');const mobilemenuButtonOpen = document.querySelectorAll('.mobile-tablet-menu-open');mobilemenuButtonOpen[0].setAttribute('aria-expanded', 'false');$('.main-nav').css('min-height', 'auto');if ($('.aa-mega-menu').hasClass('secondlevelOpen')) {$('.aa-mega-menu').stop().animate({ 'right': '-100vw' }, 0);primaryItem.parent('li').siblings('li').removeClass('hide-menu').removeClass('activated');$('.aa-mega-menu').removeClass('secondlevelOpen');}$(".scroller").css("height", "100vh");$(".left.logo a").focus();$(".mobile-grey a, .nav-logo a ").attr("tabindex", "-1");$("#mainNavigation button, .mobile-tablet-menu-open ").attr("disabled", "disabled");setTimeout(function () {primaryItem.parent('li').find('.anchor').removeClass('hide-menu');primaryItem.parent('li').siblings('li').removeClass('hide-menu').removeClass('activated');}, 0);}$('.mobile-tablet-menu').click(function (e) {e.preventDefault();$('body').addClass("fixed-position");$(".mobile-grey a, .nav-logo a ").removeAttr("tabindex");$("#mainNavigation button, .mobile-tablet-menu-open ").removeAttr("disabled");$('header#site-header-yellow .main-nav').animate({ right: '0' }, 300);$('.scroller').animate({ right: '0' }, 300);$('.left.logo').animate({ width: 'hide' }, 300);$('.mobile-tablet-menu').animate({ width: 'hide' }, 0);if ($('.scroller').length) {$('#site-header-yellow').addClass('mobilemenu-active');}var primaryHeight = $('.main-nav').height() + 120;$('.main-nav').css('min-height', 'auto');const mobilemenuButton = document.querySelectorAll('.mobile-tablet-menu');mobilemenuButton[0].setAttribute('aria-expanded', 'true');const mobilemenuButtonOpen = document.querySelectorAll('.mobile-tablet-menu-open');mobilemenuButtonOpen[0].setAttribute('aria-expanded', 'true');$(".scroller").css("height", (Math.max(document.documentElement.clientHeight, window.innerHeight || 0) - $("#site-header-yellow").offset().top));$(".left.menu-logo a").focus();});$('.mobile-tablet-menu-open').click(function (e) {// changes for CD-50114 startmobileCloseClick(e);// changes for CD-50114 end});var primaryItem = $('li.primary.childrens > button');var backlink = $('li.backLink > button');if (window.aa.helpers.cache.cachedElements.$window.width() <= mobileBreakpoint) {primaryItem.on('click', function (e) {console.log('primaryItem.on(click, function (e) ---');e.preventDefault();var megaHeight = $(this).next('.aa-mega-menu').height() + 120;$(this).parent('li').find('nav.aa-mega-menu.mobile-nav').stop().animate({ right: '0' }, 300);$(this).parent('li').removeClass('hide-menu');$(this).addClass('hide-menu');$(this).parent('li').siblings('li').addClass('hide-menu').removeClass('activated');$(this).parent('li').addClass('activated');$(this).next('.aa-mega-menu').addClass('secondlevelOpen');$(this).next('.aa-mega-menu').css('height', megaHeight);$('.main-nav').css('min-height', 'auto');$('.right.mobile-grey').hide();$('.column .sub-menu.col').animate({ width: 'show' }, 300);// $(".backLink button").focus();$(".left.menu-logo 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Skip to main content [Accesskey 'S'] Go to home page [Accesskey '1']Are you a business customer?
- Broken down?
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- Help and support
Why is that dashboard warning light on?
Play it safe and check what that red or amber light means
The lights on your car's dashboard light up when something's wrong. As a rule of thumb:
- Red warning lights need immediate action.
- Amber, orange or other colour lights often mean something needs checking by a garage.
It’s normal to see some of these lights briefly while you start your engine. But if they stay lit up while you’re driving, then you'll need to look into it.
This handy guide lists the most common dashboard lights our mechanics are asked about. Choose from the symbols below to find out what to do next:
Engine
Battery
Oil
Brake
ABS
ABS brake
Filter
If you can't see the one you're looking for, check your owner's manual as warning icons vary with each manufacturer. Or use our free app to search all warning lights by car make and light colour.
Find out more about how breakdown cover can help you if you have car troubles in our breakdown cover guide.
We provide 24/7 roadside assistance.
Buy breakdown cover
Engine management light
Safe to drive?
Yes – if it’s always lit and there's no loss of power. You should get it checked as soon as possible.
No – if it's flashing while you're driving. Avoid heavy acceleration and high engine speed. Stop the vehicle when it's safe to do so. Restart the engine after 2 minutes to reset the engine management system. If the light's still flashing, turn off the engine and contact us to report your breakdown.
Next steps
Get a garage to check the engine soon to avoid damaging the catalytic converter or diesel particulate filter.
The problem
Cars have lots of sensors to check if everything's running smoothly. If there's a problem, the sensor will tell the engine control unit (ECU) which will turn on the engine management light. There are many reasons why the light will show but a garage can check what the cause is.
Learn more about engine management lights and what causes themto turn on.
Battery warning light
Safe to drive?
No – if the battery light's red while you're driving, you need to have the fault looked at immediately as the battery isn't charging.
Next steps
Stop the vehicle in a safe place, turn off the engine and contact us to report your breakdown. Don’t restart the engine as this could make the problem worse.
The problem
There may be a problem with the wiring, the alternator or the alternator drive belt.
Back
Oil pressure warning light
Safe to drive?
No – you need to stop and check your oil level. This light shows when there's no oil pressure in the engine.
Next steps
Stop as soon as you can and check the oil level, topping up as needed. Your owner's manual will tell you how. If the light still shows, turn off the engine and contact us to report your breakdown.
The problem
If the warning light's on when the oil level's right, there's a problem with the oil supply. That could be caused by the oil pump or a blocked oil filter. Your car engine needs the right oil pressure to stay lubricated, otherwise it'll get damaged.
Back
Brake warning light
Safe to drive?
No – if you need to press your brake further than usual, your hydraulic brake circuits may have failed. Pull over and get help.
Yes – if the brake fluid level's OK, it might just be a sensor fault. In that case, it's safe to drive to a garage.
Next steps
Check you've released the handbrake fully. If you have, stop, check the brake fluid level and top it up if you need to. Your owner's manual will tell you how.
The problem
Your vehicle may have a brake fluid leak, a sensor failure or need the brake pads replacing. Get it checked out at your local garage.
Back
Anti-lock braking system (ABS) warning light
Safe to drive?
Yes – for most vehicles, as long as there aren't any noises coming from the wheels. Check your handbook to be on the safe side. Take extra care when driving, especially during wet or icy weather, as your car's braking distances may increase.
Next steps
Get a garage to check the ABS system as soon as possible.
The problem
It could be as simple as a sensor fault but a garage will let you know what the issue is.
Back
Brake system and ABS warning lights
Safe to drive
No – stop the vehicle and contact us to report your breakdown.
Next steps
Slow down gradually and avoid braking suddenly.
The problem
If your brake and ABS warning lights come on at the same time, there could be a major fault with the brakes. This is unsafe for you and other road users, so don’t drive the car until the problem has been looked at and fixed.
Back
Diesel particulate filter (DPF) warning light
Safe to drive?
Yes – but you should drive for around 10 minutes at over 40mph when safe.
No – if the light doesn't disappear after continual driving. In that case, top the vehicle, turn off the engine and contact usto report your breakdown.
Next steps
Stop-start driving can cause the DPF to get blocked. To clear it, drive around for 10 minutes at over 40mph. Check your owner's manual for more specific advice.
The problem
The DPF traps tiny soot particles which are harmful to health, and converts them to harmless ash when the exhaust system gets hot. But this doesn't happen on short journeys. If the DPF is full, it'll need replacing, which can be expensive.
Back
Find out more:
- Using jump leads
Find out what your car's really saying
Just plug our AA-Xdeviceinto your car to get updates about your car’s health sent to your phone.
It helps you spot problems before they become a real issue and explains what to do about common warning lights.
You can also learn what to do if you break down.
Published:20 September 2016 | Updated: 6 January 2020 | Author: The AA
Related links
- Flat battery advice
- How to check and top up your oil
- Checking engine coolant
- How to start a flooded engine
- Top 10 breakdown causes
- What to do if you break down
- Head gasket guide
- Why is my steering wheel shaking?
- Why is my car heater not working?
- How to change a flat tyre
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