HYUNDAI 42700-4G000 Automatic Transmission Gear Position 2.0L Switch

( Manufacturer Part Number: 42700-4G000 ), ( Type: Gear Position Switch Control )

Review HYUNDAI Fe 2.0l Automatic Transmission Gear Position Switch Oem fits SANTA 2019–2020

The **Hyundai 42700-4G000** is a precision-engineered **2019 2020 model year gear position switch** designed specifically for the **2.0L automatic transmission** found in Hyundai s **FE (Front Engine, Front Drive) platform** vehicles, including models like the **Hyundai Elantra, Kona, and Santa Fe**. This critical component serves as the mechanical and electrical interface between the driver and the transmission control system, allowing seamless shifting between **Park (P), Reverse (R), Neutral (N), Drive (D), and other specialized modes** such as **Sport (S) or Manual Shift (M)** where applicable. Crafted from high-grade, corrosion-resistant materials, the gear position switch is built to withstand rigorous daily use while maintaining durability under varying environmental conditions, from extreme temperatures to moisture exposure.

At its core, the **42700-4G000 switch** integrates a robust **rotary actuator mechanism** paired with a **multi-position electrical contact assembly**, ensuring reliable signal transmission to the transmission control module (TCM) for accurate gear engagement. The switch features a **smooth, tactile feedback design**, providing drivers with clear auditory and physical confirmation when shifting between positions, enhancing both convenience and safety. Internally, it employs **precision-machined contacts and a sealed housing** to prevent dust, debris, and moisture ingress, which could otherwise lead to erratic shifting or transmission malfunctions. The **OEM-quality wiring harness connectors** are engineered for a secure, corrosion-free fit, ensuring long-term reliability and compatibility with Hyundai s transmission control systems.

For maintenance and replacement purposes, the **42700-4G000** is designed with **easy accessibility** in mind, allowing technicians to replace it without extensive disassembly of the transmission or shift linkage. Its **direct drop-in compatibility** with the 2019 2020 FE platform ensures a straightforward installation process, minimizing downtime and labor costs. Whether addressing a **faulty shift lever, intermittent gear engagement, or diagnostic trouble codes (DTCs) related to transmission control**, this genuine Hyundai part guarantees the same level of performance and precision as the original equipment, restoring optimal functionality to the vehicle s automatic transmission system. By maintaining the integrity of the shift mechanism, this switch helps prevent premature wear on the transmission itself, contributing to the longevity and efficiency of the drivetrain.

### **Pros and Cons of buying a Hyundai 42700-4G000 (2019-2020 FE 2.0L Automatic Transmission Gear Position Switch)**

1. **Direct Replacement Part** This is an OEM (original equipment manufacturer) or high-quality aftermarket part designed specifically for Hyundai/Fiat 2.0L engines (used in models like the **Hyundai Elantra, Kona, and Fiat 500**). It ensures a perfect fit and proper function without modifications.

2. **Reliability and Durability** Hyundai s transmission components are generally built to last, and a genuine or well-made aftermarket switch is less likely to fail prematurely compared to cheap knockoffs. This part is critical for shifting between **P, R, N, D, L, and reverse**, so a reliable switch prevents drivability issues.

3. **Prevents Transmission Damage** A faulty gear position switch can cause the transmission to lock in **Park (P)** or fail to engage properly, leading to **transmission slippage, jerking, or even catastrophic failure** if the vehicle is moved while in gear. Replacing it early avoids costly repairs.

4. **Easy Installation** This part is relatively straightforward to replace, typically requiring **disconnecting the wiring harness, removing old screws/nuts, and installing the new switch**. No major disassembly of the transmission is needed, making it a **DIY-friendly repair** for those with basic mechanical skills.

5. **Cost-Effective Fix** Compared to **transmission rebuilds or replacements**, replacing just the gear position switch is **significantly cheaper** (typically **$50 $150 for the part**, plus labor if not DIY). This makes it a **practical solution** before the problem worsens.

6. **Warranty Coverage (If Applicable)** If the vehicle is still under **Hyundai s powertrain warranty** (usually **5 years/60,000 miles**), this repair may be **fully or partially covered**, reducing out-of-pocket costs.

7. **Improves Driving Experience** A functioning gear position switch ensures **smooth shifts, proper engagement of gears, and prevents accidental movement** (e.g., rolling away in **Park**). This enhances **safety and comfort**.

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1. **Potential Counterfeit Parts** If purchasing from an **unverified seller**, there is a risk of receiving a **low-quality or fake part** that fails quickly. Always buy from **reputable suppliers** (Hyundai dealership, RockAuto, Amazon, or trusted mechanics).

2. **Diagnostic Challenges** Symptoms of a **failing gear position switch** (e.g., **transmission not shifting, check engine light, vehicle stalling in gear**) can also indicate **other issues** (wiring problems, faulty solenoid, transmission fluid issues). A **diagnostic scan (OBD-II)** may be needed to confirm the exact problem before replacing the switch.

3. **DIY Difficulty for Some** While the replacement is **not extremely complex**, it requires **basic electrical and mechanical knowledge**. Those unfamiliar with **transmission components or wiring harnesses** may struggle with:

- **Locating the switch** (often behind the shifter or inside the transmission case).

- **Ensuring proper wiring connections** (incorrect wiring can cause **no shift, erratic behavior, or electrical shorts**).

- **Testing the new switch** (some may need to **reset the transmission control module** after replacement).

4. **Recurring Issues with Related Components** If the **transmission fluid is old, contaminated, or low**, replacing just the switch may **not fully resolve the problem**. Over time, **other transmission parts (solenoids, valves, seals)** may wear out, leading to **further repairs**.

5. **Limited Lifespan of the Part** While the switch itself is durable, **wear and tear from frequent shifting, electrical corrosion, or internal failure** can still occur. In some cases, the **entire transmission control module (TCM)** may need replacement if the switch fails repeatedly due to **electrical or software issues**.

6. **Potential for Overlooking Underlying Problems** If the **transmission fluid is neglected** or the **transmission is already damaged**, replacing the switch may provide **temporary relief but not a permanent fix**. A **transmission fluid flush and inspection** should be done alongside the switch replacement.

7. **Labor Costs if Not DIY** If taking the vehicle to a **dealership or mechanic**, labor costs can **add up quickly** (typically **$100 $200 ** depending on shop rates). This increases the **total repair cost** compared to a DIY approach.

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The **Hyundai 42700-4G000 gear position switch** is a **critical and cost-effective repair** for preventing **transmission-related failures** in the **2019-2020 FE 2.0L automatic transmission** vehicles. **Replacing it early** avoids **expensive transmission damage**, improves **driving reliability**, and is a **relatively simple fix** for those comfortable with basic repairs.

However, **buyers must ensure they obtain a genuine or high-quality part** and **address any underlying issues** (fluid condition, wiring, TCM health) to ensure a **long-term solution**. If the vehicle has **other transmission symptoms**, a **professional diagnosis** is advisable before proceeding.

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- Checking for **check engine lights** (look for **P0740, P0741, P0742, P0750** codes).

- Testing the switch with a **multimeter** (resistance should match Hyundai specs).

- Ensuring **transmission fluid is clean and at proper levels**.

- **Hyundai dealership parts department** (guaranteed OEM quality).

- **RockAuto, Amazon, or eBay** (look for **high-rated sellers** with **return policies**).

- **Local auto parts stores** (AutoZone, O Reilly, NAPA) for verified aftermarket options.

3. **Consider a Transmission Fluid Change** If the fluid is **dark, burnt, or low**, **flush and replace it** alongside the switch replacement to **extend transmission life**.

4. **DIY if Comfortable** If you have **basic mechanical/electrical skills**, replacing the switch yourself is **rewarding and cost-saving**. Follow **Hyundai s service manual** or **YouTube tutorials** for guidance.

5. **Seek Professional Help if Unsure** If the **transmission exhibits other issues** (hard shifting, slipping, delayed engagement), consult a **transmission specialist** to **rule out TCM or solenoid problems** before replacing just the switch.

6. **Monitor Post-Repair Performance** After installation, **test drive the vehicle** in all gears (**P, R, N, D, L**) to ensure the switch functions correctly. If **issues persist**, further diagnostics may be needed.

**Final Verdict:** **Worth the repair** if the switch is confirmed faulty, but **prioritize quality parts and address related transmission health** for a **long-lasting fix**. For most drivers, this is a **smart, preventative investment** to avoid **major transmission failure**.

Details:

BODY TYPE: LIMITED SPORT UTILITY 4-DOOR. MILEAGE: 74K MILEAGE. TRANSMISSION: 6 SPEED AUTOMATIC TRANSMISSION. DONOR VEHICLE: 2019 HYUNDAI SANTA FE.

part #: 427004g000 prices

• $50.99-$82.72

specifications autotransmissionsgo:

• for models: Santa
• for makes: Hyundai
• for years: 2019-2020
• mpn: 42700-4g000
• type: Gear Position Switch Control

offer autotransmissionsgo:

• sold: 0
• quantity: 1
• availability: In Stock
• best offers: True
• started: May 17, 2026
• options: Ship-to-home

seller autotransmissionsgo:

• rating: 99.9%
• # reviews: 63598
• city: Traverse City, Michigan

payments autotransmissionsgo:

• wallet: Apple-pay
• other
• credit card: Discover

general autotransmissionsgo:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission Parts
• condition: Used

shipping autotransmissionsgo:

• transit: 4-9 Days
• class: Standard
• type: Fixed
• cost: $0.00
• service: Standard

returns autotransmissionsgo:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

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