When the Engine Just Clicks

That sinking feeling when you turn the key and hear nothing but a click; it happens to everyone sooner or later. Maybe you’ve left the lights on or the car’s been sitting unused for weeks. Either way, jump leads can save the day if you know what you’re doing. Used carelessly though, they can fry electronics or cause a spark where you really don’t want one. Let’s keep it safe and simple.

A good set of jump leads and ten calm minutes can get you back on the road. But before you start clamping cables around, it’s worth understanding the right order; and what never to do.

What You’ll Need

First things first, you’ll need two cars: one with a healthy battery and one that won’t start. Make sure both vehicles are parked close enough for the leads to reach, but not actually touching. You’ll also need a decent pair of jump leads; thick, insulated, and with solid metal clamps. Avoid the flimsy bargain-bin kind; they can overheat or slip off mid-charge.

Turn off both ignitions, remove keys, and keep metal jewellery or watches out of the way. It’s rare, but sparks can happen. A little care now avoids a headache later.

The Right Way to Connect the Leads

Some people rush this bit, and that’s where things go wrong. Take it step by step:

• Attach the red lead to the positive (+) terminal on the flat battery.
• Connect the other end of the red lead to the positive terminal on the charged battery.
• Attach the black lead to the negative (-) terminal on the good battery.
• Finally, clip the other end of the black lead to a bare metal surface on the engine block or chassis of the dead car; not the negative terminal. That reduces the risk of a spark near the battery.

Once you’re connected, start the working car and let it idle for a few minutes. Then try the one with the flat battery. If it doesn’t start, give it another minute or two; don’t just keep cranking endlessly. If it fires up, keep both cars running for a few minutes before removing the cables in the reverse order.

The Don’ts; Avoid These Common Mistakes

It’s easy to forget that jump leads carry a lot of power. A wrong move can melt cables or damage sensitive parts. Here’s what not to do:

• Don’t connect the negative lead to the flat battery’s terminal; it risks an explosion from battery gases.
• Don’t let the clamps touch each other once connected to a live battery.
• Don’t lean directly over the batteries while starting either car.
• Don’t try to jump-start a frozen, leaking, or visibly damaged battery.
• Don’t rev the running car aggressively; it doesn’t help and can damage alternators.

And once the engine’s going, don’t switch it off straight away. Drive for at least 20 minutes to help recharge the flat battery properly.

Safety Checks and Aftercare

Once you’ve removed the leads, make sure both cars’ electrical systems are behaving normally. Lights, wipers, and dashboard indicators should all work as expected. If your car dies again soon after, the battery might be past saving; or there could be a problem with the alternator.

If you’re unsure, most garages and car accessory shops can test the battery for free. It’s also worth checking with your breakdown provider or insurer; some policies include roadside battery replacement, which can save you the hassle of doing it yourself.

Useful UK Resources

• RAC: How to jump-start a car
• AA: Using jump leads safely
• NI Direct: Guide to using jump leads
• Citizens Advice: Car repair guidance

Jump-starting isn’t complicated once you know the rhythm. Take your time, follow the order, and don’t rush it. That little burst of patience is often the difference between a quick fix and a bigger repair bill.