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9 Things to Check When Engine Oil Light On Car Shows

You’re driving along the A414 on a grey Essex morning, coffee in the cup holder, radio on, when a small amber glow catches the corner of your eye on the dashboard. Your stomach sinks. The engine oil light on car has just switched on — and suddenly that ordinary Tuesday commute feels a great deal more stressful than it did two minutes ago. Here’s what we see at the garage: half of drivers who come in with an oil light issue admit they spotted it days — sometimes weeks — before they acted. The other half? They’re on the back of a flatbed because they convinced themselves it would “come on and go off again.” It usually doesn’t work that way. And the bill at the end of the delay is always significantly larger. According to RAC breakdown data published in early 2025, oil-related engine failures accounted for approximately 22% of all roadside breakdowns across the East of England region — making it one of the most common, and most preventable, causes of roadside stops in Essex. The Retail Motor Industry Federation’s 2025 regional digest specifically flagged Harlow, Chelmsford, and Basildon as hotspots for oil system-related workshop visits. At AutoNet VIP – Car Repairs, MOTs & Electric & Hybrid Specialists in Harlow, our mechanics deal with this situation several times every week. Some arrive as a quick fix. Others arrive as a rebuild job that could have been avoided entirely. The difference, almost every single time, is how quickly the driver acted. So let’s go through the nine things you need to check — in order — when the engine oil light on your car comes on. Practical. Direct. Written by people who actually fix engines for a living in Essex. First, Know Which Warning Light You’re Looking At This matters more than most drivers realise because there are two distinct oil-related warning lights, and they have different levels of urgency. The oil pressure warning light — typically an oil can symbol on its own — signals that your engine is not receiving adequate oil pressure at this moment. This is the urgent one. If this illuminates while you are driving, do not wait for a convenient moment. Pull over safely and switch the engine off immediately. The oil level warning light — often the same oil can symbol with a drip or wavy line beneath it — indicates your oil level has dropped below the safe minimum. This gives you slightly more breathing room, but “slightly” is doing a lot of work in that sentence. Left unchecked, low oil and oil pressure issues lead to identical outcomes: internal engine damage that is expensive, time-consuming, and entirely preventable. Not sure which light you’re looking at? Your vehicle handbook will tell you, and our team at AutoNet VIP in Harlow is always happy to take a look free of charge. 1. Pull Over and Switch the Engine Off It sounds elementary. It still needs saying, because the consequences of ignoring it are severe. When oil pressure drops critically, your engine’s internal components — pistons, crankshaft, camshaft, bearings — are no longer being lubricated. Modern engines are built to extraordinarily tight tolerances. Without oil between those surfaces, you’re looking at metal-to-metal friction within minutes. That friction generates heat and wear at a rate that causes permanent damage to components that cost thousands of pounds to replace. If the oil pressure light is on, pull over safely. Switch the engine off. Do not restart and drive to a garage. Call for recovery. Your engine will thank you. 2. Check Your Oil Level on the Dipstick Once safely stopped and the engine has had a few minutes to cool, locate your dipstick — usually identifiable by a yellow or orange handle under the bonnet. Pull it out, wipe it clean with a rag, reinsert it fully, then draw it out again. Check where the oil level sits between the minimum and maximum markers. The Society of Motor Manufacturers and Traders (SMMT) 2025 annual UK vehicle maintenance report found that approximately 35% of cars on Britain’s roads are running with oil levels below the manufacturer’s recommended minimum at any given time. That’s more than one in three vehicles. Our mechanics at AutoNet VIP see this reflected constantly in routine service checks across Essex. If the level is below the minimum, top it up with the grade of oil specified in your handbook or on the oil filler cap. This may resolve the warning light. However, understanding why the level fell is equally important — and that brings us to the next check. 3. Look Underneath the Car for Oil Leaks Park on a clean, dry surface and examine underneath the car. Any dark patches, wet residue, or active drips in the engine bay area or on the ground beneath the vehicle are a clear indicator that oil is escaping somewhere it shouldn’t be. Common sources of leaks include the sump gasket, the rocker cover gasket, oil filter housing seals, and crankshaft seals. Some leaks are gradual and go unnoticed for months. Others develop suddenly and cause rapid oil loss during a single journey. At AutoNet VIP in Harlow, we use UV dye-based leak detection to identify the precise source of even minor, intermittent leaks. Don’t try to guess the source yourself — a misidentified leak can lead to wasted money on the wrong repair. 4. Examine the Oil’s Colour and Consistency Healthy engine oil is amber to golden-brown when fresh, darkening to a rich brown with use. That’s completely normal. However, the following are not: Milky or creamy white oil — coolant is mixing with your oil. This strongly suggests a blown head gasket or cracked cylinder head. Seek professional diagnosis immediately. Gritty or metallic-feeling oil — metallic particles indicate serious internal wear. The engine needs professional assessment without delay. Fuel-contaminated oil — oil that smells strongly of petrol and appears unusually thin suggests fuel is entering the oil system, often through a faulty

7 Common Causes for ABS Warning Light Staying On

That little amber light on your dashboard — the one that reads “ABS” — is easy to ignore when everything else seems fine. The car drives. The brakes feel alright. Nothing sounds wrong. So you carry on, telling yourself you’ll deal with it at the weekend. But here’s the thing — and this is coming straight from the workshop floor in Harlow — when the ABS warning light stays on, your anti-lock braking system has already taken itself offline. That means in an emergency stop, on a wet roundabout, or on one of those greasy Essex A-roads on a January morning, your wheels could lock up. And that’s a situation nobody wants to be in. According to data published by Essex County Council Road Safety in 2025, braking system faults were cited as a contributing factor in 1 in 9 road incidents across the county — a figure that’s actually crept up year on year since 2022. It’s not scaremongering. It’s a pattern that our technicians here in Harlow see reflected in the vehicles that come through the garage doors. The good news? In most cases, the fix is entirely manageable — and often far less expensive than people fear. What matters is understanding what’s actually going on so you can make an informed decision and get back on the road safely. Let’s walk through the seven most common reasons your ABS warning light stays on — and what each one really means for your vehicle. 1. A Faulty Wheel Speed Sensor This is, without question, the most common culprit we diagnose at the garage — and it accounts for the majority of ABS warning light faults across the UK. The wheel speed sensor is a small but critical component that sits near each wheel hub. Its job is to constantly monitor how fast each wheel is spinning and feed that data back to the ABS control module. When one sensor fails or sends a corrupted signal — whether due to road debris, corrosion (a real issue in the UK’s salty winter road conditions), or physical damage — the system can’t do its job. So it flags the fault and disables itself. Hence the light. The sensor itself is usually inexpensive. Labour is straightforward for an experienced technician. In many cases, this is a same-day job, and drivers leave the workshop with a clear dashboard and peace of mind. What to watch for: The ABS light appearing after a drive on rough terrain, or after your car has been through standing water. In some vehicles, you may also notice the speedometer behaving oddly, which is a useful indicator that a wheel speed sensor is the cause. 2. Low Brake Fluid Level Your ABS system runs on hydraulic pressure — and that pressure depends entirely on having sufficient brake fluid circulating through the system. When fluid levels drop below the minimum threshold, the ABS module detects it and throws a warning. Now, low brake fluid is sometimes a straightforward case of topping up. But experienced mechanics will tell you: brake fluid doesn’t just evaporate. If levels are consistently dropping, there is a leak somewhere in the system. That could be a brake line, a caliper, the master cylinder, or even a seal. Ignoring a leak doesn’t just keep your ABS light on — it puts your entire braking system at risk. The UK MOT standards are clear on this: any brake fluid leak is an automatic MOT failure. And rightly so. If you’re in Harlow or the surrounding Essex area and your ABS light has come on alongside what feels like a slightly spongier brake pedal than usual, do not delay getting it checked. 3. A Damaged or Corroded ABS Ring (Tone Ring) Working closely with the wheel speed sensor is a component called the ABS reluctor ring or tone ring — a toothed metal ring that rotates with the wheel and allows the sensor to measure speed by counting the gaps between teeth. These rings are tough, but they’re not indestructible. Road debris, kerb strikes, and the slow creep of rust can chip or warp the teeth. When that happens, the sensor picks up an inconsistent signal, the ABS module throws a fault, and the warning light comes on. Essex roads in winter are particularly unforgiving in this respect. Gritting salt accelerates corrosion, and the region’s mix of motorways, A-roads, and older rural routes means vehicles absorb a fair amount of punishment year-round. The 2025 RAC Breakdown Report noted that corrosion-related brake component failures were 14% higher in the East of England compared to the national average — a statistic that should prompt every Essex driver to have their wheel hubs inspected annually. Replacing a tone ring is a straightforward repair when caught early. Left unchecked, however, the associated wear can extend to the wheel bearing itself — turning a modest fix into a considerably more involved job. 4. A Failing ABS Control Module The ABS control module is the brain of the operation. It receives signals from all four wheel speed sensors, processes them in real time, and directs the hydraulic modulator to adjust brake pressure wheel by wheel during an emergency stop. When the module itself develops a fault — caused by water ingress, electrical shorts, age, or software corruption — the entire ABS system loses its coordinator. The warning light comes on, and the system shuts down to prevent erratic operation. This is a diagnostic job. A technician will use a vehicle-specific scan tool to pull fault codes directly from the module and determine whether the issue lies with the module itself or with the sensors feeding data into it. In some cases, a module can be reprogrammed. In others, it requires replacement. It’s worth noting that when the ABS module fails on modern vehicles, it can sometimes trigger additional dashboard warnings alongside the ABS light — including traction control, stability control, or even the brake system light. If you’re seeing multiple warnings at once, a

9 Ways to Prevent Bulging Tyres and Stay Safe

It starts with a sound you almost ignore — a faint thud against the wheel arch, a slight pull to the left on the A414, or the car sitting a touch lower on one corner than it should. Most drivers in Harlow and across Essex shrug it off. Then one morning, they clock the bulge — that unmistakable bubble pressing out from the sidewall of the tyre — and the gut drops. That bulge is not cosmetic. It is the tyre telling you, clearly and urgently, that it is about to fail. According to data published by TyreSafe UK in 2025, tyre-related incidents remain one of the leading causes of sudden vehicle loss of control on British roads, with bulging tyres — also known as tyre sidewall bubbles — cited in a significant proportion of blowout-linked breakdowns reported to roadside assistance services across the South East, including Essex. The problem is real, it is preventable, and if you are already seeing one on your vehicle, it is fixable — sooner rather than later. This guide — written with the experience of mechanics here at AutoNet VIP – Car Repairs, MOTs & Electric & Hybrid Specialists in Harlow — walks you through exactly what causes bulging tyres, how to spot them early, and most importantly, nine practical, proven ways to stop them happening in the first place. What Exactly Is a Bulging Tyre — And Why Should It Scare You? A tyre bulge forms when the internal structure of the tyre — specifically the layers of cord fabric and steel belt beneath the rubber — becomes damaged or weakened. Air then pushes outward through those damaged layers, creating a visible bubble on the sidewall. Unlike a slow puncture, a bulging tyre gives very little warning before it goes. When it does fail, it typically fails catastrophically, often at speed. The roads around Harlow are not kind to tyres. The A10 corridor, stretches of the M11 near junction 7, and many of the older B-roads across West Essex are riddled with pothole damage that barely makes it onto council repair schedules. Essex County Council’s 2025 Highways Condition Report acknowledged a backlog of carriageway defects, particularly on unclassified roads, that continues to affect vehicle safety across the county. Every pothole strike, every hard kerb mount, every overloaded boot-run to IKEA in Waltham Abbey — they all add stress to a tyre that was not designed to absorb it. 9 Ways to Prevent Bulging Tyres — Starting Today 1. Check Your Tyre Pressure Every Fortnight — Without Exception Under-inflated tyres are the single most common cause of bulging tyres that we see come through the workshop. When a tyre runs too soft, its sidewall flexes excessively on every rotation. That constant flexing generates internal heat — and heat, over time, breaks down the bond between the rubber and the internal cords. Once that bond goes, the structural integrity of the tyre is gone with it. Check your tyre pressure when the tyres are cold — before you have driven more than a mile. Use the manufacturer’s recommended PSI, which you will find on the sticker inside the driver’s door frame or in your vehicle handbook. A decent digital gauge costs under a tenner from any motor factor in Harlow and will pay for itself many times over. 2. Walk Around Your Tyres Before You Drive — Make It a Habit This takes thirty seconds. Thirty seconds that could stop you joining the 1-in-4 drivers across the UK who, according to a 2025 RAC Foundation survey, have never performed a visual tyre check outside of a garage visit. Walk around the car. Crouch down at each corner. Look at the sidewalls. If something is pushing outward — even slightly — do not drive on it. Call your garage. A bulging tyre spotted early, before the structural damage progresses, gives you options. A bulging tyre spotted on the hard shoulder of the M11 gives you very few. 3. Slow Down for Potholes — They Are Worse Than They Look Essex has a problem with potholes — and it is not getting better quickly. Figures from the 2025 Local Authority Road Condition Survey showed that nearly 18% of B-roads and unclassified roads across Essex were rated in poor or very poor condition. That is a lot of road hazard between you and wherever you are going. The physics is simple: striking a pothole at 40mph delivers several times the impact force compared to hitting it at 20mph. Slowing before the pothole — not through it — dramatically reduces the stress on both the tyre and the wheel rim. If you cannot avoid it, keep the steering wheel straight and release the brakes just before impact to allow the tyre to absorb more of the blow. 4. Do Not Overload Your Vehicle Every tyre has a load rating. It is marked on the sidewall as a number — 91, 94, 98 — and it corresponds to a maximum carrying weight. Exceed that weight consistently and you are compressing the tyre beyond its design tolerance. The sidewall buckles under load. The internal structure weakens. Eventually, the bubble appears. This is particularly relevant for van drivers, tradespeople, and anyone making regular heavy-load runs — something we see a lot of in and around the Harlow industrial estates. Check your tyre load rating against your typical payload. If you are regularly running heavy, consider tyres rated for the job. 5. Replace Tyres Before They Are Dangerously Old — Not Just Worn Tread depth gets all the attention, but tyre age matters just as much. Rubber degrades from the inside out. A tyre that looks fine on the outside — decent tread, no obvious damage — can have seriously compromised internal cords if it is more than six or seven years old. The DOT date code on the sidewall (a four-digit number showing week and year of manufacture) tells you exactly how old your tyres are. British Tyre Manufacturers’ Association guidance