Having your remote car starter fail and the check engine light illuminate simultaneously is frustrating. It suggests a potential underlying issue that needs attention. This comprehensive guide will help you diagnose the problem, offering solutions and preventing future occurrences.
Why is My Remote Starter Not Working and Check Engine Light On?
This dual problem points towards a deeper mechanical or electrical fault in your vehicle. The check engine light indicates a problem detected by the car's onboard diagnostic system (OBD-II). This could be anything from a minor sensor issue to a more serious engine problem. The remote starter's failure might be directly related to this issue, or it could be a coincidental malfunction.
Could a Low Battery Cause This?
H2: Could a Low Battery Cause My Remote Starter to Fail and Trigger the Check Engine Light?
A low battery can definitely affect your remote starter. Remote starters require a substantial amount of power to engage the car's electrical systems. If your battery is weak, it might not have enough juice to activate the starter, resulting in failure. However, a low battery is less likely to directly trigger the check engine light, though a severely depleted battery can cause the system to register faults. It's crucial to check your battery voltage using a multimeter. If it's low (below 12.6 volts), charging or replacing the battery might resolve both issues.
What are the Common Causes?
H2: What are the Common Causes of Remote Starter Malfunction and Check Engine Light?
Several factors can contribute to a remote starter malfunctioning alongside a check engine light:
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Faulty Sensors: Many engine sensors (like the crankshaft position sensor, camshaft position sensor, or mass airflow sensor) directly impact engine starting and are monitored by the OBD-II system. A malfunctioning sensor will often trigger the check engine light and prevent the remote start from working correctly.
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Electrical Problems: Issues with the car's wiring harness, fuses, or relays related to the starter motor or the remote start system itself are common culprits. A short circuit or blown fuse can prevent the remote start from functioning and potentially register a fault code leading to the check engine light.
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Immobilizer Issues: Your vehicle's immobilizer system prevents unauthorized starting. A problem with the immobilizer system (key fob issues, faulty transponder chip, etc.) can block both conventional and remote starting.
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Transmission Problems: In some cases, a problem with the transmission system (especially if your remote start requires the vehicle to be in Park or Neutral) can trigger the check engine light and prevent remote starting.
How Can I Troubleshoot This Problem?
H2: How Can I Troubleshoot My Remote Starter and Check Engine Light Issue?
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Check the Battery: As mentioned, test the battery voltage with a multimeter.
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Check Fuses and Relays: Consult your car's owner's manual to locate the fuses and relays related to the starter motor and the remote start system. Inspect them for any signs of damage or blowing.
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OBD-II Scan: Use an OBD-II scanner to retrieve any diagnostic trouble codes (DTCs) stored by the car's computer. These codes offer clues about the underlying problem.
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Inspect Wiring: Carefully examine the wiring harness connected to the remote start system and the starter motor for any visible damage, loose connections, or corrosion.
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Remote Starter System Check: If you're comfortable with automotive electronics, you can test components of the remote start system itself (but only if you have the necessary knowledge and equipment).
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Professional Diagnosis: If you're unable to pinpoint the problem, it's best to take your vehicle to a qualified mechanic or an auto electrician specializing in remote start systems for a professional diagnosis and repair.
Can I Drive My Car with the Check Engine Light On?
H2: Is it Safe to Drive With the Check Engine Light On and Remote Starter Malfunctioning?
Generally, it's not recommended to drive with the check engine light on, especially if accompanied by a remote start failure. This suggests an underlying problem that could potentially worsen or lead to more significant issues, potentially impacting drivability or safety. While you might be able to drive, it's wise to limit driving until the issue is resolved.
What is the Cost to Fix This Problem?
H2: How Much Will it Cost to Repair My Remote Starter and Check Engine Light Issue?
Repair costs vary considerably depending on the cause of the problem. It could range from a simple fuse replacement (a few dollars) to extensive repairs involving sensor replacements, wiring harness repairs, or a new starter motor (hundreds or even thousands of dollars). A professional diagnosis is the first step in accurately determining the cost.
By following these steps and understanding the potential causes, you can effectively troubleshoot the problem of your remote start not working while the check engine light is on, getting your car back on the road safely and efficiently. Remember, safety should always be your top priority. If you’re unsure about any repair, consult a professional.
