The 1999 Mercedes E320 AC compressor may not be working due to a faulty compressor, low refrigerant levels, a malfunctioning pressure switch, or electrical issues. It is recommended to have a qualified technician diagnose the problem to determine the exact cause and provide the necessary repairs.

Are you the proud owner of a 1999 Mercedes E320, a car that exudes elegance and sophistication? As an enthusiast, you take pride in maintaining your vehicle’s peak performance, but what happens when your AC compressor stops working? It can be frustrating and uncomfortable, especially during those scorching summer months. Fear not, for this blog article is here to help you troubleshoot and resolve this issue.

Whether you are a seasoned mechanic or a DIY enthusiast, this guide is tailored to your needs. We understand that you possess a moderate to advanced knowledge of car mechanics and have likely worked on your own vehicle before.

Now, let’s delve into the heart of the matter – a malfunctioning AC compressor in your treasured 1999 Mercedes E320. Why is your AC compressor not working? There could be various factors at play, such as wear and tear, electrical issues, or refrigerant leaks. This article will explore these possibilities and provide you with step-by-step instructions on how to diagnose and resolve the problem.

But that’s not all. In addition to troubleshooting tips, we will also share valuable insights on preventive maintenance and care to ensure your AC compressor remains in optimal condition. So, if you’re tired of sweating through your drives and want to regain the cool comfort of your Mercedes E320’s AC system, keep reading.

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SaleBestseller No. 1

SIZZER AC Air Conditioning Compressor fits for Mercedes-Benz E320 1996-2003, ML320 1998-2002, SLK230 CLK320 1998-2001, Acu-ra RL 1997-2002, Sprinter 2500 2002-2006

[Wide Compatibility] – AC Compressor Clutch Kit Replacement for Mercedes-Benz E320 1996-2003, ML320 1998-2002, SLK230 CLK320 1998-2001, Acu-ra RL 1997-2002, Sprinter 2500 2002-2006. Replace 10349930, 1011218.
[Reference Number] – AC Compressor Reference Number: 77356, 0610045, 4711293, 10000701, 2302011, 78356, 0002302011, 0002307011, 1520971, 5511631, 4710293, 639307, 000230701180, 000230701187, 000230201180 Please check the reference number carefully to ensure a perfect fit.
[Strict Test] – All Air conditioning compressors undergo various rigorous tests before delivery to ensure that you receive high-performance, reliable auto parts. Strict professional testing includes aging test, durability test, hardness test, etc.
[Strong Cooling Function] – The auto ac compressor can provide sufficient pressure, which increases power force and decreases engine load. It dramatically improves the cooling function: features as high and stable efficiency, safety, and reliability.
[Premium Quality] – Excellent material adopts fine workmanship with a stable structure. It is wear-resistant, anti-corrosion, and anti-rust. abulous compression ability effectively improves the cooling effect. Good heat dissipation and ventilation will not cause load and damage to the water tank radiator.

Bestseller No. 2

AC Compressor & A/C Kit For Mercedes E320 E300D E420 E430 & E55 AMG W210 1996 1997 1998 1999 2000 2001 2002 – BuyAutoParts 60-80148RK New

Engineered for superior durability, backed by industry-leading 2-year, unlimited-mileage warranty
Guaranteed Exact Fit for easy installation
100% BRAND NEW, premium ISO/TS 16949 quality – no core deposit or return required!
Kit includes compressor with clutch, drier filter, expansion valve, oil and O-ring seals. Please note: for use only in motor vehicle air conditioner (MVAC) systems. Use in a 20-ounce self-sealing container.
Fits all US-spec 1996-2002 Mercedes E-Class, chassis code W210

Bestseller No. 3

PHILTOP 77356 Air Conditioning AC Compressor for E320 1996-2003, Crossfire 2004-2008, ML320 1998-2002, Sprinter 2500 2003-2006, Sprinter 2500 2002-2006

Compatibility: AC Compressor compatible with E320 1996-2003, ML320 1998-2002, Sprinter 2500 2003-2006, SLK230 1998-2001, Crossfire 2005-2006 3.2L, CLK320 1998-2002, C230 1997-2000, CLK430 1999-2003, E430 1998-2002, Crossfire 2004 2007-2008, SLK320 2001-2004, C280 1996-2000, ML430 1999-2001, Sprinter 3500 2003-2006, S320 1996-1999, E300 1996-1999, E420 1997, ML500 2002, CLK320 2003 3.2L, E55 AMG 1999-2003, Sprinter 2500 2002-2006, CLK55 AMG 2001-2002
Direct Replacement: AC Compressor replacement for 1520971, 11105111, 5097010AA, 639307, CS20084, 4710293, 4711293, 77356, 78356, 2041697, 5511631, 6511631, 7511631, 295067NA, 0002302011, 2302011, 32053, 2011112, 142986C, 2369, 1440N, 21635, 10343180, 10347421, C1942, C2049, 0610045, TEM275638, 275638, DW77356, 3003760
Premium Alumium Material: This ac air compressor is a replacement compressor and clutch. Its main body is made of high-strength aluminum material, which is durable, rigid, and wearable. It will not crack, break, or leak. Such high-quality ensures a long-time use for each compressor kit
Strong Cooling Function: The auto ac compressor can provide sufficient pressure, which increases power force and decreases engine load. It dramatically improves the cooling function: features as high and stable efficiency, safety, and reliability
Low Noise & Low Fuel Consumption: AC compressor works excellent and has low noise with a better experience. With a lower load factor, low power will be input when driving at high speed, which increases fuel economy and makes operation smoothly

Bestseller No. 4

New AC Air Condition Compressor with Clutch for Mercedes-Benz B200 C234 C240 C320 CL500 CL550 CLK320 CLS500 E320 GL320 GL450 GL550 ML, R, S Models

【Vehicle Compatibility】This air conditioner compressor with clutch fits for 2006-2011 for Mercedes-Benz B200 2.0L, 2002-2002 for C230 2.3L, 2001-2005 for C240 2.6L, 2001-2005 for C320 3.2L, 2002-2006 for CL500 5.0L, 2010-2010 for CL550 5.5L, 2004-2005 for CLK320 3.2L, 2006-2006 for CLS500 5.0L, 2004-2005 for E320 3.2L
‎【Replaces Part#】‎1010805, 1010807, 1110805, 1110807, 1210805, 1210807, 639834, TSP0155339, 4710466, 4710468, 4710581, 4710594, 4710596, 4711466. AC compressor fits 2009-2009 for GL320 3.0L, 2007-2012 for GL450 4.7L, 2008-2012 for GL550 5.5L, 2006-2011 for ML350 3.5L, 2006-2007 for ML500 5.0L, 2008-2011 for ML550 5.5L, 2010-2011 for R350 3.0L, 2006-2011 for R350 3.5L, 2006-2008 for R500 5.0L, 2006-2006 for S350 3.7L, 2002-2006 for S430 4.3L, 2000-2006 for S500 5.0L
【Product Specifications】Compressor Type:7SEU17C; OIL TYPE:PAG 100; Oil Prefilled:180ML; R-efrigerant Type: R134a; Pulley Grooves 6; Pulley Diameter (mm) 100
【Energy Saving & Durable 】This AC Air Conditioning Compressor kit provides efficient operation and great performance with low noise and minimal vibrations, ensuring a cool and comfortable ride. Built from high-strength aluminum alloy, it offers dependable performance, extended lifespan, and contributes to lower fuel consumption during steady driving
【Important reminders】Before installing your new compressor, ensure the AC system is fully cleaned (evaporate cleaning agents completely).For optimal results, we advise professional installation and commissioning

Bestseller No. 5

A-Premium A/C Condenser Replace# 4814, 2108300270 – Compatible with Mercedes-Benz E-Class E300 1995-1997, E320 1996-2002, E420 1997-1997, E430 1998-2002, E55 AMG 1999-2002

[OEM Fit & Quality]: 100% Brand New Item. Direct Bolt-on OE Replacement A/C Condenser Assembly.
[Vehicle Fitment]: Compatible with Mercedes-Benz W210 E300 1995-1997, W210/W211 E320 1996-2002, W210 E420 1997, W210/W211 E430 1998-2002, W210/W211 E55 AMG 1999-2002
[Attention Note]: Includes Bracket Only, No Receiver Drier. This aluminium ac condenser kit maximizes cooling efficiency and accelerates the heat dissipation. Please Check Fitment before ordering by using the Amazon’s Confirmed Fit Tool above or checking the Product Description below
[Reference Number]: 4814, 2108300270, 2108300570
[Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted ac condenser assembly. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

Bestseller No. 6

Automotive Cooling A/C AC Condenser For Mercedes-Benz E320 E350 3159

[Warranty]: Lifetime guarantee
[Design Material]: Built with the highest grade materials and components
[Quality Control]: Each Product is quality inspected and 100% tested
[Fitment]: OE design to ensure exact fit, form and function Carefully crafted to exceptional OE standards for precise fit
[Compatibility]: If You Would Like To Verify Fitment, Please Send Us A Message As We Respond Quickly

Bestseller No. 7

HinLIaDa A/C AC Compressor With Clutch, For Mercedes-Benz E320/ML320 3.2L 1996 1997 1998 1999 2000 2001 2002 Air Conditioner Compressor & A/C Clutch Perfectly Match The Auto Parts Of The Original Car

【100% Brand New】High quality- tested to meet or exceed OEM specifications. It could correctly replace the original quality part.
【Feature】The air-conditioning compressor can provide enough pressure to increase power and reduce engine load. It greatly improves the cooling function. It has the characteristics of high efficiency, stability, safety and reliability.
【OEM Part Number】CO105111C, 7511631, 7512187, 295067NA, 5839, 5844, 32053
【Fitment】Air Conditioner Compressor W/ Clutch fit For Mercedes-Benz E320/ML320 3.2L 1996 1997 1998 1999 2000 2001 2002, Please Compare With Your Original One Before Purchasing! 100% Brand New and High Quality.
【Note】Before installing the air conditioning compressor pump, be sure to clean your car’s cooling system pipes. If there are debris or metal fragments in the pipes, the service life of the parts may be shortened.

Bestseller No. 8

GDSMOTU AC Compressor with Clutch Fits for Mercedes Benz C220 C230 CLK320 C36 AMG Series E300 1996-2009, for Dodge/Freightliner Sprinter 2500 3500 2.7L 2002-2006, for Chrysler Crossfire 3.2L 2004-2008

[Vehicle Compatibility] — GDSMOTU Compressor Clutch Fit for Chrysler for Crossfire 3.2L 2004-2008, for Dodge for Sprinter 2500 2.7L 2003-2006, for Dodge for Sprinter 3500 2.7L 2003-2006, for Freightliner for Sprinter 2500 2.7L 2002-2006, for Freightliner for Sprinter 3500 2.7L 2002-2006, for Mercedes-Benz for C220 2.2L 1996, for Mercedes-Benz for C230 2.3L 1997-2000, for Mercedes-Benz for C280 2.8L 1996-2000
[Replace OEM Numbers & Specification] — CO 105111C,1520971, 11105111, 5097010AA, 639307, CS20084, 4710293, 4711293, 77356, 78356, 2041697, 5511631, 6511631, 7511631, 295067NA, 0002302011, 2302011, 32053, 2011112, , 142986C, 2369, 1440N, 21635, 10343180, 10347421, C1942, C2049, 0610045, TEM275638, 275638, DW77356, 3003760 / Oil Type: PAG46 / Pulley Grooves:6 / Pulley Diameter (mm): 119 / Compressor type: SD7SB16C / Internal Oil Content 130ml
[Advantages] — Compressor is mainly made of high-strength aluminum alloy which ensures a long service life. All compressors are pressure tested with nitrogen for leaks to ensure their quality. Our AC compressor kit works efficiently under low noise and tiny vibration to provide you a super cool trip. Driving at a stable speed will help reduce fuel consumption
[Guaranteed quality] — As a high-speed rotating working part, the air conditioning compressor often encounters failures. Common failures are abnormal noise, leakage, and failure to work due to circuit problems. Our air conditioning compressor with clutch meets OE standards and ISO/TS 16949 quality to ensure product quality
[Important Reminder] — Before installing the air conditioning compressor please clean the cooling system pipe of the your car, If sundries or metal shavings in the cooling system pipe make the system stuck, it will cause the compressor kit burn out due to the Large pressure. What’s more, the internal parts are lubricated during production and this item is pre-filled with oil upon delivery; therefore, there is no need to add oil during initial use

SaleBestseller No. 9

KAX 77356 AC Compressor for E320 1996-2003,ML320 1998-2002,Sprinter 2500 2003-2006,SLK230 1998-2001,Crossfire 2005-2006 3.2L,CLK320 1998-2002, 1520971 Air Conditioning Compressor

Wide Compatibility – AC Compressor Clutch Kit Replacement for Mercedes-Benz E320 1996-2003, ML320 1998-2002, SLK230 CLK320 1998-2001, Acu-ra RL 1997-2002, Sprinter 2500 2002-2006. Replace 10349930, 1011218.
Strict Testing Before Delivery – All Air conditioning compressor clutch parts undergo various rigorous tests before delivery to ensure that you receive high-performance, reliable auto parts. Strict professional testing includes aging test, durability test, hardness test, etc. Air Conditioning Compressor OE Number: 1520971,DW77356,10343180,10347421,10105111,12105111,5097010AA,639307,CS20084,4710293,4711293,11105111,77356,78356,2041697,5511631,5512187,6511631,6512187,7511631,7512187
Premium Quality- This Air conditioning compressor clutch is made of high-quality material and maintains an excellent strength to give the parts long-term performance. Compatible Refrigerant Oil Type:PAG 46, Pulley Groove Quantity: 6, Pulley Diameter:4.75, Refrigerant Type: R134a
EASY INSTALLATION – Plug and play design, no modification or drilling, quick installation. Shock, abrasion and fatigue tested to help ensure quality and durability.
Reminder:Please carefully select your vehicle info (year/make/model/trim ) in the top left corner of the page to confirm compatibility. Or refer to the vehicles and product specification information in description. If you have any questions or concerns, we are here to help.

Bestseller No. 10

Readair Air Conditioning A/C Condenser Compatible with Mercedes-Benz E-Class E300 1995-1997, E320 1996-2002, E420 1997-1997, E430 1998-2002, E55 AMG 1999-2002

VEHICLE FITMENT:AC condenser replacement Compatible with Mercedes-Benz W210 E300 1995-1997, W210/W211 E320 1996-2002, W210 E420 1997, W210/W211 E430 1998-2002, W210/W211 E55 AMG 1999-2002
MAXIMIZE COOLING EFFICIENCY: Built with high-density multi-louvered fins to improve cooling efficiency and ensure durability in extreme cold weather. The corrugated aluminum fins and tubes are connected by brazing, providing unparalleled performance and durability
DIRECT REPLACEMENT: Designed to meet OE fit, form and function, and this condenser allows you to easily install it yourself. Easily solve problems such as poor cooling, coolant leakage, insufficient cooling, aging and corrosion, Maximize cooling efficiency and accelerate heat dissipation
DURABLE DESIGN : Heavy gauge mounting brackets to reduce movement and vibration
BUY WITH CONFIDENCE: Readair offers a two-year unlimited-mileage guarantee on our meticulously crafted ac condenser assembly. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.

Understanding the AC Compressor

Before we dive into troubleshooting and resolving the issue of a non-functioning AC compressor in your 1999 Mercedes E320, let’s take a moment to understand the role and importance of this component.

The AC compressor plays a crucial role in your car’s air conditioning system. It is responsible for compressing the refrigerant and circulating it through the system, allowing the heat to be drawn out and the cool air to be distributed throughout the cabin. Without a properly functioning AC compressor, you’ll be left with hot and stuffy air, making your drives uncomfortable, especially during those sweltering summer months.

The Possible Culprits

Now that you understand the significance of the AC compressor, let’s explore the potential reasons for its malfunction.

1. Wear and Tear:

Over time, the AC compressor may experience wear and tear due to its constant usage. This can lead to mechanical failures, such as damaged pistons, valves, or bearings, which can prevent the compressor from functioning properly.

2. Electrical Issues:

Electrical problems can also contribute to a non-working AC compressor. Faulty wiring, blown fuses, or a malfunctioning clutch can disrupt the electrical flow and prevent the compressor from engaging.

3. Refrigerant Leaks:

One of the most common causes of AC compressor failure is refrigerant leaks. The refrigerant plays a vital role in the cooling process, and when there’s a leak, it not only affects the compressor’s performance but also puts additional strain on the entire AC system.

Troubleshooting and Resolving the Issue

Now that we’ve explored the possible culprits behind a non-working AC compressor, let’s move on to troubleshooting and resolving the issue.

Step 1: Check for Power

Start by checking if power is reaching your AC compressor. You can do this by using a multimeter to test the electrical connections and ensure that there is a steady flow of electricity.

If there is no power reaching the compressor, you may need to inspect the wiring and connections for any signs of damage or corrosion. Replace any faulty components and ensure that all connections are secure.

Step 2: Inspect the Clutch

The clutch is responsible for engaging and disengaging the AC compressor. If the clutch is not functioning correctly, the compressor won’t turn on.

Inspect the clutch for any signs of damage or wear. Look for frayed or broken wires, worn-out bearings, or a loose clutch plate. If you notice any issues, it’s best to replace the clutch assembly to ensure proper functioning of the compressor.

Step 3: Check for Refrigerant Leaks

As mentioned earlier, refrigerant leaks can cause the AC compressor to malfunction. To check for leaks, you’ll need to use an electronic leak detector or UV dye.

If a leak is detected, you’ll need to locate the source and repair it. Keep in mind that refrigerant leaks should be handled by a professional, as they require specialized equipment and expertise.

Step 4: Test the Pressure

Testing the pressure in your AC system can provide valuable insights into the health of the compressor. Use a manifold gauge set to measure the high and low side pressures.

If the pressure readings are outside the manufacturer’s specified range, it indicates a problem with the compressor or other components in the system. Consult a professional to diagnose the issue and perform any necessary repairs.

Preventive Maintenance and Care

Now that you’ve successfully resolved the issue with your AC compressor, it’s essential to implement preventive maintenance and care practices to ensure its optimal performance in the long run.

Regular Inspections

Regularly inspect your AC system, including the compressor, for any signs of damage or wear. Look out for oil stains, refrigerant leaks, or unusual noises. Timely detection of issues can prevent major failures and costly repairs.

Clean the Condenser

The condenser, located in front of your radiator, plays a crucial role in dissipating heat from the refrigerant. Over time, it can become clogged with dirt, debris, and bugs, hindering its performance. Regularly clean the condenser to optimize its efficiency.

Replace Filters

Dirty or clogged filters can restrict airflow, putting unnecessary strain on the AC system, including the compressor. Replace the cabin air filter and the engine air filter at regular intervals to maintain proper airflow.

Use the AC System Regularly

Refrigerant leaks are often caused by seals drying out and becoming brittle due to inactivity. To prevent this, it’s essential to use your AC system regularly. Even during the cooler months, run the AC for a few minutes every week to keep the seals lubricated and in good condition.

Congratulations! You’ve successfully diagnosed and resolved the issue with your 1999 Mercedes E320’s AC compressor. By following the troubleshooting steps and implementing preventive maintenance practices, you can ensure that your AC system remains in optimal condition, providing you with cool comfort during your drives.

Remember, while DIY repairs can be satisfying, it’s always best to consult a professional for complex issues or if you’re unsure about any aspect of the repair process. Stay cool and enjoy the luxury of your Mercedes E320!

How to diagnose air conditioner A/C

Frequently Asked Questions (FAQ)

Why is the AC compressor in my 1999 Mercedes E320 not working?

Possible reasons for a non-functioning AC compressor in a 1999 Mercedes E320 include low refrigerant levels, a faulty compressor clutch, or electrical issues.

How can I diagnose the issue with the AC compressor in my 1999 Mercedes E320?

It is recommended to have a professional mechanic check the refrigerant levels, visually inspect the compressor clutch, and test the electrical connections to diagnose the problem accurately.

Can I repair the AC compressor in my 1999 Mercedes E320 myself?

AC compressor repairs can be complex and require specialized tools. It is usually best to have a professional handle the repair to ensure it is done correctly.

How much does it cost to replace the AC compressor in a 1999 Mercedes E320?

The cost of replacing an AC compressor in a 1999 Mercedes E320 can vary, but it is typically between $500 and $900, including parts and labor.

Is it necessary to replace the entire AC system if the compressor is faulty?

In most cases, only the faulty AC compressor needs to be replaced. However, it is recommended to have the rest of the system inspected to ensure there are no additional issues.

Final Words: Ensuring the Performance and Longevity of Your AC Compressor in Your 1999 Mercedes E320

In conclusion, understanding the AC compressor and its role in the air conditioning system of your 1999 Mercedes E320 is crucial for troubleshooting and resolving any issues. The possible culprits for a non-working AC compressor include wear and tear, electrical issues, and refrigerant leaks.

To resolve the issue, you can start by checking if power is reaching the compressor and inspecting the clutch for any damage. Checking for refrigerant leaks and testing the pressure in the AC system are also important steps in the troubleshooting process.

Implementing preventive maintenance and care practices can help ensure the optimal performance of your AC compressor in the long run. Regular inspections, cleaning the condenser, replacing filters, and using the AC system regularly are all important steps to maintain the compressor’s functionality. It is important to note that while DIY repairs can be satisfying, it is best to consult a professional for complex issues or if you are unsure about any aspect of the repair process.

By following these steps and taking proper care of your AC compressor, you can enjoy cool comfort during your drives in your 1999 Mercedes E320. Keep cool and enjoy the luxury of your car!

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1999 Mercedes E320 Ac Compressor Not Working: Troubleshooting Guide