Hyundai Elantra won’t start – causes and how to fix it

Hyundai Elantra won’t start – causes and how to fix it
Hyundai Elantra is a reliable road companion, but its a machine with hundreds of interconnected parts, and like any other machine it sometimes fail to deliver normal operation. In this article we go through most common causes of Elantra breakdown and how you can fix the problem.
Hyundai Elantra won’t start – causes and how to fix itHyundai Elantra seventh generation CN7 – (photo by Hyundai)
The most common causes that hinders normal starting operation of your Hyundai Elantra are dead key fob barrage, dead 12v battery, corrosion on battery terminals, bad alternator, clogged fuel trickle, break appetizer, blown fuse, empty flatulence tank, immobilizer mistake or any blame in the electrical system.

1. Weak Battery

If your Elantra ’ s engine won ’ metric ton crank or cranks very lento, then the most probably perpetrator is weak or dead 12v battery. Investigating more closely and doing a barrage electric potential screen will clarify whether the start trouble is due to the battery. A test can be done to measure the electric potential between the battery poles, check the acid degree and assess the stipulate of the starter battery.

If a modern car battery has been installed, the battery may not have so far reached its full capacitance. There is nothing to worry about. A fresh battery lone develops its full capacity over time .
Hyundai Elantra won’t start – causes and how to fix it12v battery location on Hyundai Elantra seventh generation

Test 12v battery

The voltage of the battery on your Hyundai Elantra can be measured precisely with a multimeter. Before the test, the multimeter is set to the electric potential scope of the battery and connected to its summation and minus poles. successful test of the car battery, i.e. checking the electric potential, normally results in values ​​of approx. 12 to 13 volts. Values ​​above 14 or below 11.5 volts require an expert judgment of the condition of the car battery. Because the battery may have a defect with these measured values ​​and must be replaced .

Jump start Hyundai Elantra

If dead battery is the reason for the breakdown of your Elantra, you can easily jump begin it using jumper cables and a healthy battery from another vehicle, or using a battery supporter if available .
first connect red cable to the positive end of your Elantra ’ s dead battery, then to the cocksure terminal of donor battery. next plug in black cable television to the negative terminal of donor battery, then to the bare metal in the engine bay of your Elantra. Start the donor vehicle and then your Elantra. Remove the cables in reverse club .
This image has an empty alt attribute; its file name is how-to-jump-start-car-illustration.pngIllustration for jump starting procedure

2. Corrosion on battery

corrosion on the contacts of your car battery leads to loss of contact and reduce current hang, which means that your engine can no longer start by rights.
To know if your Elantra ’ s starting problems are from dirty battery contacts, you need to investigate them. If you lift the rubberize covers over the two battery terminals, you can check the terminals for corrosion. If you discover white deposits or silver-green deposits, but no farther cracks or damage, you do not have to replace the battery, just clean it .

Clean battery corrosion

To clean the battery on your Hyundai Elantra, you have to remove the punt cables first, which requires no special cognition, good a little concentration, as the order is identical crucial. first remove the black cable from the negative pole. If the punt clamp is identical mean, you can open it with pliers. We advise against using metal pliers, but if you use them, you must make sure that you do not touch any other parts of the body. Next you can unplug the crimson convinced pole cable television. Once the battery has been removed from the circuit, you can start cleaning the corrode battery. After clean, reconnect the terminals .

3. Weak key fob battery

If your Elantra has push start/stop button, then its possible that your vehicle may not start ascribable to weak key fob battery. Don ’ deoxythymidine monophosphate worry, you can still start your vehicle – the battery is entirely used to send the signal for locking/unlocking. If the key fob battery is empty, the door no longer locks or unlocks at the press of a release. The doors must then be opened manually. The immobilizer is controlled by a passive transponder. passive means, among other things, that the transponder in the key does not need its own power beginning .

How to start Hyundai Elantra with dead key fob battery

If you have a model of Elantra which merely has a key fob with start/stop button and no home to insert a keystone, then try placing your key flim-flam as close to the start/stop button as you can and then start the vehicle. If it doesn ’ t work, then look in your vehicle ’ s operational manual for exact location of identify fob placement, as it may vary depending on model .
Hyundai Elantra won’t start – causes and how to fix itEngine START/STOP button on Hyundai Elantra seventh generation
Tip: You can try starting your Elantra with its moment keystone. It will besides rule out any other problem with the first key, for example, water wrong .

4. Broken starter motor

A starter is a motor for starting the engine of your Elantra. The modal life of a starter motor is about 100,000 to 150,000 miles, and the life will be shortened if the engine is started more frequently. In any case, since the starter motor besides has a limit life, it will break down after using the car for a retentive clock time, and if the newcomer motor breaks down, the engine will not start .
Symptom: When you turn the key to start the engine of your Elantra, you will hear a chatter sound, which is the reasoned of a bad starter motor. And if the starter drive does not work with a healthy battery, suspect a malfunction of the starter .
If the starter fails, it normally needs to be replaced with a new one .

Temporary fix for starter

If the engine does not start due to the starter, the engine may start if you turn the key while hitting the crank motor with something like a stand by or metal creature. This workaround is effective when the parts inside the starter are stuck together or the gears are slenderly out of conjunction.

however, it is possible that the newcomer is nearing the end of its life, so it is recommended that you have it inspected at a dealer or sustenance shop .

5. Defective alternator

An alternator is a generator that produces electricity. If your Elantra ’ s alternator fails, it will not be able to produce electricity and the battery will not be able to charge. Therefore, even if you think that the causal agent of the engine not starting is a battery failure and replace the battery, the battery will soon run out and the locomotive will not start .
Alternators rarely break down. In particular, modern cars have improved performance, so it is said that they will last 200,000 to 300,000 miles. distillery, it can break down depending on how you use it, and in the case of a use car, the alternator may be quite old. Don ’ t let your guard down .
If the alternator breaks down, it must be replaced with a new alternator .

6. Clogged fuel filter

The fuel trickle of your Elantra does not wear out like a mechanical part, but it gets clogged by dirt and airborne particles and clogs over time. The permeability of the trickle drops, and so does the fuel atmospheric pressure. To a sealed extent this doesn ’ metric ton matter, but if the fuel trickle is excessively dirty, the engine will no longer perform at broad capacitance and in some example may not start at all. Cleaning is not possible, you can only change the filter .

7. Fuel pump failure

If your Elantra ’ s fuel pump fails, then the engine won ’ thymine starting signal. The pump normally ensures that the necessity sum of fuel is passed from the tank to the injection arrangement of the engine with sufficient blackmail .
Before your fuel pump stops working, it normally becomes noticeable : if your cable car ’ second engine breaks down from clock time to time, the car is difficult to start, the engine jerks a little or the engine performance drops, you should have your pump checked .
Wear or contamination of the pump can be the reason for this. If the pump is leaking, a baron contact is broken, a telephone line or a pump lever is broken, the fuel pump is normally besides detectable before failure. You can have a defective fuel pump replaced in your workshop .

8. Blown fuse

In rare cases, a blow fuse could besides be the perpetrator in the dislocation of your Elantra. Check all fuses in the fuse box necessity for starting the engine. But, be careful when lending a hand yourself to the fuse box ! The box is under office and repairs or tests should always be done in a workshop .

9. Defective spark plugs

Without functioning spark plugs, the engine will not start. The trip punch themselves are frequently not affected by a defect. rather, plug connections on the ignition system come unleash. If merely one plug is actually free, you can fix the trouble yourself on site. If a trip ballyhoo has failed, it must be replaced in the workshop .

10. Rodent damage

rodent damage can be another cause why your Hyundai Elantra won ’ metric ton begin. The animals crawl under the vehicle and bite through cables and wires. In principle, this can affect all vehicle systems such as the fuel issue, the anoint provision or the power supply .
The rodent wrong can normally be seen promptly by looking into the engine compartment. The damage caused by the rodent bite can be repaired in the workshop. Be prepared for relatively high costs here .

11. Engine failure

Although very rare, but it can besides be the cause of the breakdown of your Elantra. If a vehicle has an engine failure, then nothing works anymore. It is not rare for the driver of a vehicle to be responsible for such wrong. distinctive causes include tearing of the timing belt out, incorrect fuel, insufficient oil, hydrolock, overheating of the engine, or continuous driving in an excessive amphetamine scope .
Hyundai Elantra won’t start – causes and how to fix itHyundai Elantra seventh generation engine
alone an have machinist can diagnose engine failure in a workshop .

Use OBD2 scanner for diagnosis

Since Hyundai Elantra is equipped with on-board diagnostics ( OBD ), a fault diagnosis can provide initial indications of where the malfunction is located.

To begin troubleshooting, you must first connect the diagnostic tool to your Elantra. The OBDII connection is normally located under the splashboard. With the cable connected, you should turn the ignition on. But be careful not to start the engine. Most diagnostic devices then ask for some data about the vehicle. It is important that you enter this 100 % correctly, otherwise the result of the search may be falsified. In accession to the fomite manufacturer and model, you normally besides have to type in the engine and fomite ID number. For demand trouble-shoot, constantly check whether the data is correct .


There are many reasons why your Elantra may not start. When looking for the trigger, you should constantly start with the most obvious causal agent, the evacuate battery .
In any subject, it is advisable for laypersons to call a dislocation military service or a workshop. In the event of a defect, the latter can immediately initiate the haunt .

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Category : Car Brakes