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Updated on Jan 31, 2024

John Davis

Expert Automotive Writer

Reviewed by Kathleen Flear, Director of Content

Edited by Jessica Barrett, Senior Car & Insurance Editor

What's on this page?

How much does it cost to replace a shifter interlock solenoid?
Where can I get my shifter interlock solenoid replaced?
How will a mechanic replace my shifter interlock solenoid?
What happens if I don’t replace my shifter interlock solenoid?
What is a shifter interlock solenoid?
Can I replace my shifter interlock solenoid myself?
FAQs
Meet Our Experts

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How much does it cost to replace a shifter interlock solenoid?

The average shift interlock solenoid replacement cost is about $200 to $500, with $100 to $200 going toward parts and $100 to $200 for mechanic labor. Specific prices may vary, depending on your make and model.

How long does it take to replace a shifter interlock solenoid? For most models, it will take a certified mechanic about one to two hours to replace this part. Expect an initial inspection to confirm the issue, followed by the actual service.

How did we estimate these prices?
Jerry's experts researched and collected data from 2500+ real repair shops in all 50 states in the US, including everything from the total cost of repair services to the hourly labor cost for mechanic labor in each shop. We combined that data with our expert database of hundreds of real repair jobs, thousands of real cars, millions of real car part prices in order to best estimate the cost of each repair service. Our labor cost estimate is calculated by taking the average hourly labor rate for a certified mechanic in the US, times the number of hours it takes on average to complete a repair. We recommend you compare your local shops with Jerry and contact those shops directly to get final pricing for your vehicle.

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What parts do I need for my shifter interlock solenoid replacement and how much do those parts cost?

Here are some of the parts you may need for an interlock solenoid replacement. Remember to check your owner’s manual for a complete list, including specific part numbers.

Shift interlock solenoid: The main component responsible for enabling gear shifting after pressing the brake pedal. The average cost is between $50 to $150, depending on the model.

Collector (electrical connector): This part connects the shift interlock solenoid to the vehicle's wiring harness. This part costs approximately $10 to $30.

Brake light switch: This switch sends a signal to the shift interlock solenoid when the brake pedal is pressed, allowing gear shifting. Expect to pay about $20 to $50.

Replacement gasket or seal (if needed): This seal keeps the shift interlock solenoid in place to prevent leaks. It costs between $5 to $30.

Release rod: This allows the manual release of the shift lock in case of system failure. It costs about $20 to $50.

Springs (if present): The springs provide tension and aid in component functionality. These are cheap, costing about $5 to $20 per spring.

Solenoid mounting hardware (screws, bolts, etc.): These attach the solenoid to a bracket or housing, and they cost just a few dollars.

Bushings

: These are used to provide support, reduce friction, and absorb vibrations between different parts of the shifter assembly or other related components. During a replacement, inspecting and replacing worn or damaged bushings can be part of the repair process to maintain optimal performance (and it may cost

several hundred dollars

We recommend purchasing parts at local auto parts stores like AutoZone, Advance Auto Parts, and O'Reilly Auto Parts, as well as online retailers like Amazon and RockAuto. We also recommend reputable brands such as Dorman, ACDelco, and Standard Motor Products for shifter interlock solenoid components, ensuring proper gear shifting and safety features for your vehicle. However, like price, recommended brands may also vary depending on your vehicle's specific year, make, and model.

Keep in mind: If your mechanic recommends a transmission shift solenoid service with a transmission fluid flush, this may cost extra.

Should I buy OEM or aftermarket parts?

It's best to choose OEM (Original Equipment Manufacturer) parts for your shifter interlock solenoid replacement. They offer better compatibility and reliability than aftermarket parts, to ensure a proper fit and longer lifespan. While aftermarket parts might be cheaper, they may not perform as well.

Where can I buy parts for my shifter interlock solenoid replacement?

Authorized dealerships, reputable auto parts stores like Advance Auto Parts, AutoZone and O'Reilly Auto Parts, online retailers like Amazon and RockAuto, and specialized automotive suppliers all offer potential sources for shifter interlock solenoid replacement parts. Prioritize trusted sellers to ensure you acquire high-quality parts that perfectly match your vehicle's specifications and ensure a successful replacement process.

Find out what parts are recommended for my car

Where can I get my shifter interlock solenoid replaced?

The quest to find the perfect repair shop for your shifter interlock solenoid replacement might seem daunting, especially if you lack a reliable mechanic.

Thankfully, Jerry's

GarageGuard™

comes to the rescue, enabling you to compare prices from 2,500 vetted repair shops nationwide. Download the app for genuine reviews and potential diagnostic fee insights.

See below for some of our vetted shops and start comparing quotes for repair work in your area.

187 Reviews

106 St Tire & Wheel

106-01 Northern Blvd, Manhattan, NY

Shifter Interlock Solenoid Replacement Cost

Fair Cost Estimate for This Shop

$141

(Parts - $112, Labor - $29)

Shop Diagnostic Fee

(Included in service charges)

$25

Compare this shop for free with Jerry 718) 446-6769

170 Reviews

Jaramillos Transmission

2324 Quarry St, Dallas, TX

Shifter Interlock Solenoid Replacement Cost

Fair Cost Estimate for This Shop

$133

(Parts - $112, Labor - $21)

Shop Diagnostic Fee

(Included in service charges)

$60

Compare this shop for free with Jerry (972) 241-1600

121 Reviews

New Life Automotive

4301 Washington St, Halethorpe, MD

Shifter Interlock Solenoid Replacement Cost

Fair Cost Estimate for This Shop

$141

(Parts - $112, Labor - $29)

Shop Diagnostic Fee

(Included in service charges)

$118

Compare this shop for free with Jerry (410) 242-6232

115 Reviews

Elite Auto Repair & Service Inc #2

5655 E Colonial Dr, Orlando, FL

Shifter Interlock Solenoid Replacement Cost

Fair Cost Estimate for This Shop

$142

(Parts - $112, Labor - $30)

Shop Diagnostic Fee

(Included in service charges)

$120

Compare this shop for free with Jerry (407) 228-3285

How did we vet these shops?
Jerry experts researched 2500+ real repair shops across the US. We talked to real shop customers, and analyzed both real shop pricing data and thousands of real customer reviews from each shop to verify them individually. We do not partner with the shops listed above, and our analysis is always unbiased.

How will a mechanic replace my shifter interlock solenoid?

The specific steps for replacing a shifter interlock solenoid can vary depending on the vehicle's make and model. It’s a complicated process that involves removing the battery and reinstalling a tiny coil or spring.

Here is a general outline of the process that a mechanic may follow:

Diagnostic Check: The mechanic will first diagnose the issue to confirm that the shifter interlock solenoid needs replacement. They may also check for any related problems in the transmission system.

Access the Solenoid: To access the shifter interlock solenoid, the mechanic may need to partially disassemble the center console or remove other components that block access to the solenoid. This may start with battery removal.

Disconnect Electrical Connectors: The electrical connectors linked to the solenoid will be disconnected to enable removal.

Remove Mounting Hardware: The mechanic will remove any screws, bolts, or fasteners holding the shifter interlock solenoid in place.

Replace the Solenoid: The old shifter interlock solenoid will be removed, and a new one will be installed in its place.

Reconnect Electrical Connectors: The electrical connectors will be reconnected to the new solenoid.

Reassemble Components: If any parts were removed for access, the mechanic will reassemble them, ensuring proper alignment and fit.

Test the Replacement: The mechanic will test the shifter interlock solenoid replacement by moving the gear shifter through all gears, ensuring smooth operation and correct engagement.

Check for Proper Functionality: The mechanic will verify that the gear shifter only moves out of "Park" when the brake pedal is pressed, ensuring the proper operation of the new solenoid.

Perform Final Inspection: A final inspection is done to ensure all connections are secure, and there are no leaks or issues with the installation.

Test Drive: A test drive is often performed to further validate the replacement's success and check for any additional issues.

What happens if I don’t replace my shifter interlock solenoid?

The shifter interlock solenoid enables smooth gear shifting—so if it fails, you could face serious risks to your safety. However, the solenoid is generally durable and doesn't require regular maintenance.

A faulty shifter interlock solenoid might lead to the following issues:

Difficulty Shifting Gears: You may experience difficulties shifting out of "Park" or changing gears smoothly, hindering your ability to drive properly.

Stuck in "Park": The gear shifter could get stuck in the "Park" position, preventing you from moving the vehicle.

Safety Risks: A malfunctioning solenoid may lead to accidental gear engagement, increasing the risk of accidents or loss of control.

Inability to Drive: Without functional shifting, you may be unable to drive the car safely or at all.

Brake Light Issues: A faulty solenoid might prevent the brake light switch from working correctly, causing brake light problems.

Electrical Drain: A defective solenoid could result in continuous electrical power consumption, draining the battery.

Increased Repair Costs: Ignoring the issue may lead to further damage to other transmission components, resulting in more costly repairs.

What is a shifter interlock solenoid?

"Shift interlock solenoid" and "shifter interlock solenoid" are interchangeable terms. They refer to a component in an automatic transmission system that is responsible for the shift interlock mechanism, which prevents the gear shifter from being moved out of the "Park" position unless the brake pedal is pressed.

In simple terms, a shifter interlock solenoid ensures that you can’t move your car from Park to drive mode without applying the brake.

The solenoid collaborates with the transmission control module (TCM) to ensure the automatic transmission system operates safely and effectively. The TCM coordinates the release of the shift interlock solenoid when gear-shifting conditions are met. Additionally, the valve body, guided by speed sensor inputs and TCM signals, decides when and how to engage specific gears for smooth transmission operation.

A shifter interlock solenoid is designed to last the duration of your car’s existence—and it rarely needs touching. Most mechanics won’t even service it.

When should I replace the shifter interlock solenoid on my car?

You may never need to replace this part. However, you should replace the shifter interlock solenoid on your car if you experience difficulties shifting gears, get stuck in "Park," or face safety risks due to solenoid malfunction.

How often should a shifter interlock solenoid be replaced?

The shifter interlock solenoid typically does not require regular replacement unless it becomes faulty or shows signs of malfunction. This may happen between 60,000 to 100,000 miles into the lifespan of the vehicle, though it can vary depending on usage, vehicle condition, and environmental factors.

Some models tend to experience more issues with the interlock solenoid than others: Honda Accord, Toyota Camry, Chevrolet Silverado, Ford Escape, and the Nissan Altima.

Monitor your vehicle for any related issues, such as difficulty shifting gears or brake pedal-related problems, and seek replacement when necessary. If the

Check Engine light

or any other warning light or trouble code appears, take it seriously and make a repair appointment immediately.

Can I replace my shifter interlock solenoid myself?

While experienced DIY enthusiasts can replace a shifter interlock solenoid themselves, it's generally not recommended for the average car owner. Shifter interlock solenoid replacement can involve intricate procedures and is crucial for proper transmission function and safety.

Be aware that a single mistake during installation could lead to significant issues with shifting and safety. To ensure a successful replacement, it's best to seek assistance from a qualified mechanic or professional with expertise in automotive systems.

Remember to disconnect your car battery before performing any electrical work, including a bad shift solenoid replacement.

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FAQs

Can you drive with a bad shifter interlock solenoid?

Driving with a bad shifter interlock solenoid can be unsafe and problematic. It may cause difficulties in shifting gears or even get stuck in "Park," hindering your ability to drive the vehicle safely. Prompt replacement is recommended to avoid potential risks and ensure smooth gear shifting.

What are the signs of a bad shifter solenoid?

Signs of a bad shifter interlock solenoid include difficulty shifting gears, being stuck in "Park," or experiencing safety risks due to improper gear engagement. Additionally, brake light issues and potential electrical drain may indicate solenoid problems.

How much is labor for a solenoid replacement?

Generally, solenoid replacement might take around 1 to 2 hours of labor. Mechanics typically charge between $80 to $150 per hour, resulting in a labor cost of $80 to $300 or more, depending on the complexity of the job.

Note that the labor cost for the average solenoid replacement can vary based on factors such as the vehicle make and model, location, and the mechanic's hourly rate. Get multiple quotes from several mechanics to make sure you’re paying a fair price for the labor involved in your specific solenoid replacement.

Meet Our Experts

John Davis

Car Expert

Certified mechanic with 10+ years of experience

John Davis is an expert automotive writer and former automotive mechanic. John's work spans multiple categories, and he relishes the opportunity to research a new subject and expand his area of expertise and industry knowledge. To date, John has written more than 200 articles covering car maintenance and care, car advice, how-to guides, and more.

Prior to joining Jerry’s editorial team, John worked as a mechanic and freelance writer, creating content for clients including HotCars and SetPower.

Jessica Barrett

Car Expert

Jessica Barrett is a senior insurance writer and editor with 10 years of experience in the automotive and travel industries. A specialist in car insurance, car loans, and car ownership, Jessica’s mission is to create comprehensive content that car owners can use to manage their costs and improve their lives. As a managing editor for a team of writers and insurance specialists, Jessica has edited over 2,000 articles for Jerry on topics ranging from local insurance shopping tips to refinancing car loans with bad credit.

Before joining Jerry as a senior content editor in 2021, Jessica created visual content for clients such as Expedia, Vivid Seats, Budget Direct Car Insurance, Angie’s List, and HomeAdvisor. Her content was published in Business Insider, Forbes, Apartment Therapy, and the BBC.

Kathleen Flear

Car Expert

Kathleen Flear is an expert insurance writer and editor who heads up Jerry’s editorial team as director of content. Kathleen empowers drivers to make smart car ownership decisions through best-in-class articles on insurance, loans, and maintenance. Prior to joining Jerry in 2021, Kathleen served as managing editor for a team of SEO content marketing professionals at Article-Writing.co and worked as a freelance writer and editor for a range of digital publications, including Chicago Literati magazine and Golden Words. She earned a bachelor’s degree in English language and literature from Queen’s University, and a master’s degree in creative writing and fiction from Sierra Nevada University.

*The price information provided on our car repair webpages is intended for general informational purposes only. Actual prices for car repair services may vary based on various factors, including but not limited to the make and model of your vehicle, the extent of repair required, and the prevailing market conditions. All prices for real repair shops are estimations based on our research only. Therefore, the prices listed on our webpages should not be considered as final quotes or binding offers.