MERCEDES 166-905-19-00-9107 Switch Block Benz

( Manufacturer Part Number: 166-905-19-00-9107 ), ( Model: E250 E350 E400 ML250 ML350 ML400 ML63 E550 ML550 ), ( Part Type: Switch Block ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 2012 2013 2014 2015 )

Review MERCEDES benz Genuine Switch Block fits E250 2012–2015

The **Mercedes-Benz 166-905-19-00-9107 switch block** is a precision-engineered electrical component designed exclusively for select Mercedes-Benz vehicles, serving as a critical junction point within the vehicle s wiring harness system. This high-quality switch block is integral to the electrical architecture of certain models, particularly those equipped with advanced driver-assistance systems (ADAS), infotainment controls, or climate control interfaces. Crafted from durable, corrosion-resistant materials, it ensures long-term reliability under the demanding conditions of automotive environments, where exposure to temperature fluctuations, vibration, and moisture is common. The switch block features a robust, molded housing that securely houses multiple internal contacts, allowing for seamless signal routing between the vehicle s control modules, sensors, and actuators. Its compact yet functional design minimizes wiring clutter while maximizing connectivity, making it an essential component for maintaining optimal electrical performance and system responsiveness. Whether integrated into the dashboard, center console, or under-hood wiring loom, this switch block adheres to strict OEM specifications, ensuring compatibility with Mercedes-Benz s proprietary electrical systems. For technicians and enthusiasts alike, this part represents a blend of engineering precision and automotive excellence, embodying the brand s commitment to performance, durability, and seamless integration within the vehicle s electrical network.

### **Analysis of buying a Mercedes-Benz 166-905-19-00-9107 Switch Block**

The **Mercedes-Benz 166-905-19-00-9107** is a **switch block assembly** (part of the **W204 E-Class, W211 E-Class, and W212 ML-Class**) responsible for controlling various electrical functions, including **gear shift interlocks, parking brake engagement, and transmission-related signals**. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of purchasing a 166-905-19-00-9107 Switch Block**

1. **Direct OEM Replacement**

- This is a **genuine Mercedes-Benz part**, meaning it is designed to fit perfectly and function as intended without modifications.

- Avoids compatibility issues that may arise with aftermarket or non-OEM alternatives.

2. **Reliability & Durability**

- Mercedes-Benz parts are built to last, especially when sourced from **authorized dealers or remanufactured by reputable suppliers**.

- Reduces the risk of premature failure compared to cheaper, lower-quality alternatives.

3. **Warranty Coverage (If Purchased from Authorized Sources)**

- Some suppliers offer **limited warranties** (e.g., 6 months to 2 years), providing peace of mind against defects.

- If bought from an **authorized Mercedes-Benz service center**, it may qualify for factory-backed warranty.

4. **Prevents Further Electrical Issues**

- A faulty switch block can cause **transmission-related errors (e.g., "No Start" or "Gear Shift Interlock")**, parking brake malfunctions, or **warning lights (e.g., ABS, ESP, or transmission faults)**.

- Replacing it resolves the root cause rather than treating symptoms.

5. **Compatibility with Modern Diagnostics**

- Since it is an **OEM part**, it integrates seamlessly with **Mercedes-Benz diagnostic tools (e.g., STAR, DAS, or third-party tools like VCDS)** without requiring additional programming.

6. **Resale Value Protection**

- Keeping your vehicle in **original condition** (with OEM parts) helps maintain its **resale value**, especially for high-mileage or classic Mercedes models.

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### **Cons of purchasing a 166-905-19-00-9107 Switch Block**

1. **High Cost Compared to Aftermarket Alternatives**

- The **price of an OEM switch block** can range from **$200 to $500 **, depending on the supplier and model year.

- **Aftermarket or remanufactured versions** (e.g., from **MOPAR, ACDelco, or specialized European part suppliers**) may cost **$50 $150**, though quality varies.

2. **Potential for Counterfeit or Low-Quality Parts**

- If purchasing from **unverified sellers (e.g., eBay, Amazon, or unlicensed online marketplaces)**, there is a risk of receiving a **fake or poorly made part**.

- Always buy from **authorized dealers, Mercedes-Benz approved suppliers, or reputable remanufacturers** (e.g., **Remanufacturer.com, EuroCarParts, or local Mercedes-Benz service centers**).

3. **Installation Complexity**

- The switch block is located near the **transmission and gear shift mechanism**, requiring **disassembly of the shifter boot and possibly the center console**.

- **Not a beginner-friendly repair** may require **mechanical and electrical knowledge** or a **professional mechanic** for proper installation.

4. **Additional Diagnostics May Be Needed**

- Before purchasing, it s wise to **confirm the exact issue** (e.g., **code P0700, P0740, or a "No Start" condition**) to ensure the switch block is indeed the problem.

- Some symptoms (e.g., **transmission slipping, rough shifting**) may require **further diagnostics** (e.g., **solenoid testing, valve body inspection**) before replacement.

5. **Remanufactured vs. New Debate**

- **Remanufactured switch blocks** (e.g., from **Remanufacturer.com**) are **cost-effective** but may have **mixed reliability** depending on the supplier.

- **New OEM parts** are more reliable but **expensive**; **used/recycled parts** (if available) can be cheaper but may have **unknown service history**.

6. **Potential for Other Underlying Issues**

- If the switch block fails due to **wiring damage, corrosion, or a failing transmission**, replacing just the block **may not fully resolve the problem**.

- A **full electrical system check** (e.g., **wiring harness inspection, ground checks**) may be necessary for long-term reliability.

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### **Conclusion**

The **Mercedes-Benz 166-905-19-00-9107 switch block** is a **critical OEM component** that, when replaced correctly, **resolves transmission and gear shift-related electrical issues** effectively. While it offers **superior reliability and compatibility**, the **high cost and potential for counterfeit parts** make it a **mixed proposition** for some buyers.

For **serious Mercedes-Benz owners** who prioritize **long-term reliability and resale value**, an **OEM or high-quality remanufactured part** is the best choice **especially if purchased from a trusted supplier**. However, for **budget-conscious buyers**, a **verified aftermarket or remanufactured alternative** (with proper testing) can be a **cost-effective solution**, provided the part is **genuine and well-made**.

---

### **Recommendation**

1. **Verify the Problem First**

- Before purchasing, **run a full diagnostic scan** (using **STAR, DAS, or VCDS**) to confirm that the **switch block is indeed faulty** (common codes: **P0700, P0740, P0750, P0752**).

- Check for **physical damage** (e.g., **corrosion, broken pins, cracked housing**) in the switch block.

2. **Purchase from a Trusted Source**

- **Authorized Mercedes-Benz Dealers** (most reliable, but expensive).

- **Reputable Remanufacturers** (e.g., **Remanufacturer.com, EuroCarParts, or local Mercedes specialists**).

- **Avoid unknown sellers** stick to **verified suppliers with return policies**.

3. **Consider Remanufactured vs. New**

- If on a **tight budget**, a **high-quality remanufactured part** (with a **good warranty**) is a **practical middle ground**.

- If **reliability is paramount**, a **new OEM part** is the safest choice.

4. **Professional Installation Recommended**

- Due to the **complexity of the installation**, **have a qualified mechanic** perform the replacement to **avoid wiring mistakes or improper seating**.

5. **Check for Additional Issues**

- If the switch block fails frequently, investigate **wiring harness damage, ground connections, or transmission solenoid issues** to prevent **recurring problems**.

### **Final Verdict**

- You have **confirmed it s the root cause** of your electrical/transmission issue.

- You re purchasing from a **trusted supplier** (OEM or high-quality remanufacturer).

- You re willing to **pay for reliability** and **professional installation**.

- You re on a **strict budget** and can **verify an aftermarket part s quality**.

- You re **not confident in installation** and must rely on a **mechanic s expertise**.

For most **Mercedes-Benz owners**, the **OEM or premium remanufactured switch block** is the **best long-term solution**, balancing **cost, reliability, and peace of mind**.

Details:

Parts must be resalable and in the original packaging. Electrical parts are not returnable. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: 16690519009107 prices

• $74.99-$299.00

specifications steeringwheelsiiz:

• for makes: Mercedes
• for years: 2012-2015
• mpn: 166-905-19-00-9107
• model: E250 E350 E400 Ml250 Ml350 Ml400 Ml63 E550 Ml550
• part type: Switch Block
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 2012 2013 2014 2015

general steeringwheelsiiz:

• Car Truck Parts Accessories > Interior Parts Accessories > Steering Wheels Horn Buttons
• condition: New

returns steeringwheelsiiz:

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

offer steeringwheelsiiz:

• options: Ship-to-home
• sold: 0
• quantity: 4
• availability: In Stock
• started: February 21, 2026

seller steeringwheelsiiz:

• # reviews: 4567
• rating: 99.7%
• city: Warwick, Rhode Island

payments steeringwheelsiiz:

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

shipping steeringwheelsiiz:

• class: Standard, Expedited, One-day
• transit: 4-7 Days
• cost: $0.00
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery, FedEx 2Day, FedEx Standard Overnight
• carrier: FedEx

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