Turn-Key Nothing Happens Battery Is Good | What Shall I Do Now?
There are several options. When you turn the key, does anything happen? Check your battery if you turn it, but no sound comes out, and the motor does not crank. Is the voltage sufficient? Are the leads firmly attached to the terminals? Is it possible that the terminals have corroded?
Check the battery again if you hear a click. Check the starter motor if the terminals are clean, the leads are tight, and the voltage is good (about 12 V DC, give or take). It’s possible that the starter solenoid is stuck or that the terminals are worn out (more likely). Have someone turn the key while you touch the solenoid with a wrench. If the solenoid starts up, it needs to be refurbished or replaced.
If the engine starts when you turn the key, the problem is likely with the fuel or ignition system. You could have a faulty fuel pump, injectors, distributor, and damaged plugs or leads. It’s most likely your ignition system if you can smell gas when cranking. Check the coil, tips, distributor, and other components for spark.
If it starts, gets fuel, and sparks reliably, the problem is most likely with the ECU. To make the engine function, the ECU relies on several sensors. It will not enable the engine to start if it does not receive the right signals. I’ve had the ECU fail due to a couple of capacitors on the mainboard blowing, so that could be the problem.
It’s impossible to precisely evaluate what’s preventing the automobile from starting without more information. No noise would indicate an electrical or starter fault. Are all of the lights on? When the key is “on” before you start it or open the door, the dash should light up with all the error/warning lights.
If the lights do not turn on, the battery may be dead, or the main fuse (or wiring) may be faulty.
If the lights function but the starting does not turn, it could be a fuse, wiring, or even an ignition fault if the lights function but the starting does not turn.
On the other hand, the starting procedure was something I didn’t consider until the very end. If you have a manual transmission, make sure the clutch is fully depressed (most modern cars have a clutch interlock). In an automatic, the gear selection must be in N or P. If you don’t start the car properly, it won’t start. This also applies to vehicles with alarms that haven’t been properly deactivated starter-disable kill switches.
If you’ve done everything correctly and it still won’t start (no noise), the starter is broken, or power isn’t getting to it.
Someone who is asking this question shouldn’t try the following, but it’s a good idea to think about it:
If you can locate your starter, you can use jumper wires to connect it to the battery, bypassing all of the car’s electronics and other components. It will either turn over or not. If not, it’s most likely a problem with the battery or the starter. If that’s the case, the problem is almost certainly with the car’s electrical or ignition system.
The Signs of a Faulty Battery
If your vehicle’s cranking is sluggish on cold mornings, it’ll be more difficult to start. There’s no sound or interior lights; look for a failing battery, a loose or corroded connection, or an electrical draw. The battery is most likely damaged if low and has visible terminal corrosion.
If jumpstarting your car works, you have a battery problem. You must, however, evaluate whether it is simply approaching the end of its useful life or if there are underlying problems. A failed alternator might cause a dead or depleted battery. It could also be caused by additional pull from auxiliary lights, fuses, sound systems, alarms, etc.
Symptoms and Signs of a Faulty Alternator
Things to look out for are no-starting and trouble-starting, fading lighting, and sound system output issues. If your automobile starts but stalls in the middle of a journey, it’s likely because your alternator is broken and your battery isn’t getting charged. The alternator bearings in your motor may be creating a screaming sound that gets louder when things like the heating or sound system are turned on.
Another red flag is turning the AM radio to a low number on the dial without music and revving the engine.
Assume the check engine or battery indicator light on your car is illuminated. If your automobile gets a jump start but then stops running, it might be an issue with the charging system, or if it gets a jump start but then stops running, it could be a problem with the alternator. It’s vital to seek professional help to get an appropriate diagnosis
What Are the Functions of the Alternator and Battery?
A car battery generates a substantial electric charge that flows through the starting mechanism and turns many gears to start the vehicle. Once the automobile goes, the alternator transmits the current back to the battery to recharge it. It powers your car’s electronics and guarantees that the correct amount of charge is returned to the battery when you’re on the road.
If your car doesn’t start, you can do a few things. The warning signs described above should help you figure out what’s going on. Get a starter (and keep your car running) and bring it in to have your electrical system checked by a professional if you don’t want to do your diagnostics. Inspections of the starting and charging systems are required.
The voltage and current output of the alternator and any signs of damaged diodes should also be verified. These components convert AC (alternating current) to DC (direct current) electrical current (direct current). If your alternator needs to be replaced and your car has been customized with power-hungry aftermarket equipment like a music system, ask if you need a higher-capacity alternator.
If the alternator is in good operating order, the focus will shift to other components of the starting and charging system to find the root of the problem.
Do you have a damaged alternator in your vehicle?
It’s conceivable that your battery was affected as a result. Because the alternator governs how much electric current is supplied back to the battery while recharging, overcharging could have caused the battery to overheat. This diminishes the device’s expected lifespan and renders it unstable. Find out if you need an alternator replacement while getting your alternator repaired. If your battery is dead, the alternator will not be damaged.