2018 Tesla X Won't Start

Common Causes for Your 2018 Tesla X Not Starting and How to Resolve Them

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Reviewed by

Devin Cabugcal

Written by RepairPal Car Genius

Updated January 14, 2025

38% chance it's the

Battery

27% chance it's the

Alternator

20% chance it's the

Starter

15% chance it's

Something else

The most common reasons a 2018 Tesla X won't start are a dead battery, an alternator problem, or failed starter.

Battery: A weak or failing battery can result in difficulty starting the engine and electrical system malfunctions due to insufficient power supply.
Alternator: A failing alternator can result in insufficient electrical power to the vehicle, leading to battery drain and electrical system malfunctions.
Starter: A faulty starter motor or a weak battery can prevent the engine from cranking properly, leading to starting issues.

Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

What are the best Tesla repair shops?

RepairPal Certified shops can diagnose and repair your 2018 Tesla X engine and performance issues. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

What are the initial diagnostic steps to take for a 2018 Tesla X that won't start?

When your 2018 Tesla X won't start, the first step is to check the key fob battery, as a dead battery can prevent the vehicle from recognizing the fob and initiating the start sequence. If the fob is functioning properly, the next step is to perform a complete vehicle diagnosis using an OBD-II scanner. This tool can help you identify any fault codes that may indicate underlying issues. After addressing any codes, consider checking for software glitches, as these can sometimes interfere with the vehicle's ability to start. If problems persist, a soft reboot of the vehicle's systems, including the touchscreen, may resolve any temporary issues. By following this diagnostic approach, you can systematically troubleshoot the starting problem and potentially restore your Tesla X to working order.

What are the common problems that could cause a 2018 Tesla X to not start?

When your 2018 Tesla Model X fails to start, it can be frustrating, but understanding the common problems can help you diagnose the issue. One frequent culprit is software glitches, which can disrupt the vehicle's computer system and prevent it from starting. If you suspect this, a simple reset of the vehicle's systems may resolve the issue. Another common problem is related to the battery; specifically, a dead 12V battery can lead to starting failures. Checking the battery's charge and connections is a good first step in troubleshooting. Additionally, don’t overlook the key fob battery; a depleted key fob battery can also hinder your ability to start the vehicle. If you find that these DIY checks do not resolve the issue, it may be wise to consult Tesla's roadside assistance or a service center for further diagnosis. Regular maintenance and timely software updates can significantly reduce the chances of encountering these starting problems in the future.

How urgent is it to address the starting issue in a 2018 Tesla X?

Addressing the starting issue in a 2018 Tesla Model X is of utmost urgency, as neglecting it can lead to significant safety risks and costly repairs. Starting problems often indicate deeper electrical issues that, if left unresolved, may worsen over time, potentially leaving you stranded or unable to operate your vehicle safely. Prompt diagnosis and repair by a qualified technician are essential to ensure the vehicle's proper functioning and to avoid the inconvenience and hazards associated with starting failures. Prioritizing these repairs not only safeguards your investment but also enhances your driving experience by maintaining the reliability and performance of your Tesla.

Related 2018 Tesla X Problems

Read about related problems experienced by other Tesla X drivers like you.

Buick Encore won't turn over after new battery installation, makes ticking noise when off

Some Buick Encore owners report experiencing issues where the vehicle won't turn over after a new battery installation, accompanied by a ticking noise when off. These problems can stem from an incomplete battery capacity, as a new battery may not yet provide sufficient power for starting the vehicle. Additionally, some owners find that a dead battery, characterized by hard starting or slow cranking, can lead to clicking noises when attempting to start the engine. Starter problems are also noted, as a failed starter can prevent the vehicle from turning over, resulting in either a clicking sound or complete silence. Furthermore, a fast clicking noise when turning the ignition key may indicate low voltage or high resistance in the electrical system, suggesting deeper electrical issues. It is advisable for owners facing these symptoms to check the battery's capacity, inspect for dead battery signs, examine the starter, and assess the electrical system. If problems persist, consulting a mechanic for a thorough diagnosis and repair is recommended.

1 model year affected

Avg Mileage: 173,000

2 others reported problem

1 comment

Cadillac DTS cranks but won't turn over, fuel pump and filter replacement needed

Some Cadillac DTS owners report experiencing issues where the vehicle cranks but won't turn over, often indicating potential problems with the fuel pump or fuel filter. A common cause for this issue is a faulty fuel pump, which can prevent the engine from receiving the necessary fuel to start. Additionally, a clogged or malfunctioning fuel filter may restrict fuel flow, leading to similar starting difficulties. Owners are advised to check fuel pressure using a gauge, as low pressure could signal a failing fuel pump. Listening for a humming sound from the fuel tank when the ignition is turned on can also help identify fuel pump issues. Furthermore, inspecting the fuel pump relay and fuse is crucial, as faulty components can impede fuel pump operation. Other factors, such as a weak battery or a bad starter, may also contribute to starting problems, so it's important to rule these out. For accurate diagnosis and resolution, consulting a professional mechanic is recommended.

1 model year affected

Avg Mileage: 1129,000

2 others reported problem

1 comment

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