MERCEDES Benz Kae Climate Control Compressor Relay K.a.e. 3.701.140 A/c

( Manufacturer Part Number: 3701140 ), ( To Control: Climate Control, Climate Control Unit, A/c Heater, A/c Compressor ), ( Color: Black ), ( Vintage Part: No ), ( Placement On Vehicle: Dashboard, Front, Left, Right, Fuse Box, Relay Box, Engine Compartment ), ( Type: Relay ), ( Oe/oem Part Number: A/c Compressor, 8 Cyl, Verz., Verz, Dzb, 8 Cyl.verz.dzb ), ( Voltage: 12v ), ( Features: Durable, Relay, Genuine Oem Mercedes-benz Part ), ( Country Of Origin: Germany )

Review MERCEDES K.a.e. benz Kae A/c Climate Control Compressor Relay fits W126 W140 W210

The KAE 3.701.140 Mercedes-Benz compressor relay is a crucial component in the air conditioning system of certain Mercedes-Benz models, specifically the W126, W140, and W210 series. This relay plays a vital role in controlling the operation of the compressor, ensuring that the climate control system functions optimally.

The KAE 3.701.140 Mercedes-Benz compressor relay is an electromechanical device that features a compact, yet robust design. It is constructed with high-quality materials that can withstand the rigors of automotive use. The relay housing is made from a durable, engineered plastic, while the internal components include a robust contact system and a sturdy electromagnet.

The relay has a standard automotive connector that plugs directly into the wiring harness of the Mercedes-Benz climate control system. It is designed to fit seamlessly into the existing wiring configuration, making installation a straightforward process for most DIY enthusiasts or professional mechanics.

The KAE 3.701.140 Mercedes-Benz compressor relay is engineered to provide reliable operation, even under heavy usage conditions. It features a high current capacity that can handle the demands of the compressor, ensuring consistent performance. Additionally, it is designed to be resilient against temperature extremes, ensuring optimal functionality in both hot and cold environments.

When the compressor is called upon to operate, the relay receives an electrical signal from the climate control system. The electromagnet in the relay then engages, allowing current to flow through the contacts and activate the compressor. Once the compressor has completed its cycle, the relay disengages, cutting off the current flow and allowing the compressor to rest.

This KAE 3.701.140 Mercedes-Benz compressor relay is an essential component for maintaining the climate control system in Mercedes-Benz W126, W140, and W210 models. Its robust design, reliable operation, and straightforward installation make it an ideal choice for Mercedes-Benz owners looking to keep their vehicles in top condition. Whether you're a DIY enthusiast or a professional mechanic, this compressor relay is sure to meet your needs and exceed your expectations.

The KAE 3.701.140 Mercedes-Benz compressor relay is a crucial component of the climate control system in certain Mercedes-Benz models, including the W126, W140, and W210 series. This part is responsible for controlling the operation of the air conditioning compressor. Let's discuss the pros and cons of buying this relay as a replacement.

1. OEM Compatibility: This relay is an original equipment manufacturer (OEM) part, meaning it is specifically designed and manufactured by Mercedes-Benz for their vehicles. This ensures a perfect fit and optimal performance.

2. Improved System Functionality: A faulty compressor relay can cause the air conditioning system to malfunction, leading to discomfort and decreased vehicle value. Replacing the faulty relay with a new one restores proper function and improves overall system reliability.

3. Enhanced Safety: Properly functioning climate control is essential for driver and passenger comfort, especially during extreme temperatures. A failed compressor relay replacement can lead to potential safety hazards, such as overheating or engine damage due to the air conditioning system not working correctly.

1. Cost: OEM parts, like the KAE 3.701.140 Mercedes-Benz compressor relay, can be more expensive than aftermarket alternatives. However, the cost difference may be offset by the peace of mind and reliability that comes with using genuine OEM parts.

2. Availability: Depending on the specific Mercedes-Benz model and the availability of parts at local dealerships or auto parts stores, it may take some time to source and receive the compressor relay.

3. Installation Complexity: Installing the compressor relay may require specialized knowledge and tools due to the complexity of the climate control system. It is recommended to have the repair done by a professional to ensure proper installation and functionality.

In conclusion, the KAE 3.701.140 Mercedes-Benz compressor relay is an essential component for maintaining the climate control system in certain Mercedes-Benz models. While it may come with a higher cost and potential installation complexities compared to aftermarket alternatives, the benefits of using an OEM part include improved system functionality, enhanced safety, and optimal performance. Ultimately, the decision to purchase this relay comes down to personal preferences, budget, and the importance of having a reliable climate control system in your Mercedes-Benz vehicle.

Recommendation: If you own a Mercedes-Benz W126, W140, or W210 series vehicle and are experiencing issues with the climate control system, it is recommended to replace the faulty compressor relay with a new OEM part, such as the KAE 3.701.140, to restore proper functionality and ensure optimal performance and reliability.

Details:

MERCEDES-BENZ W124 / W126 W140 500SL 500SEL 560SL 560SEL E500 500E S500 8 Cylinder, YOU ARE buying ON AN USED TESTED K.A.E CLIMATE CONTROL A/C COMPRESSOR RELAY No damage. Perfect working condition.

part #: 3701140 prices

• $54.95-$74.95

specifications inswico:

• for models: W126, W140, W210
• for makes: Mercedes
• mpn: 3701140
• to control: Climate Control, Climate Control Unit, A/c Heater, A/c Compressor
• color: Black
• vintage part: No
• placement on vehicle: Dashboard, Front, Left, Right, Fuse Box, Relay Box, Engine Compartment
• type: Relay
• oe/oem part number: A/c Compressor, 8 Cyl, Verz., Verz, Dzb, 8 Cyl.verz.dzb
• voltage: 12v
• features: Durable, Relay, Genuine Oem Mercedes-benz Part
• country of origin: Germany

payments inswico:

• other
• credit card: Discover
• wallet: Paypal

seller inswico:

• rating: 99.5%
• # reviews: 783
• city: Fort Lauderdale, Florida

offer inswico:

• availability: In Stock
• best offers: True
• started: March 27, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home

shipping inswico:

• class: Economy, Expedited
• carrier: USPS
• transit: 10-14 Days
• type: Fixed
• cost: $9.80
• service: Economy with Adult Signature required, USPS Priority Mail

returns inswico:

• policy: No Returns

general inswico:

• Car Truck Parts Accessories > Interior Parts Accessories > Switches Controls
• condition: Used

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