Repairs covered by 12-month/12,000-mile warranty. Suncore . However, that does not necessarily mean that it is safe to do so. 1. The air suspension system in the Mercedes Benz GL450 can be turned off if you wish to jack it up for repair. Like this content? When the compressor fails, the system will have no means of inflating the air bags and the vehicle will have a disabled suspension. Vehicle riding lower than normal. AFAIK the compressor is good. Typically when the air suspension compressor quits working, the whole car may lower to the ground and fail to raise. There are epoxy compounds that cure faster, make sure to read the direction on the back of the epoxy to allow it to cure before you pressurize the system again. The level adjustments are meant to be performed with the car on a chassis alignment system and the inclination angles, as measured by a Romess CM-09606 inclination measuring instrument, entered into SDS just prior to saving the final values. The air suspension system works under the suspension control unit. Could this be some type of electronic failure? In some cases, it can also lead to a knocking sound when going over bumps. The most popular service booked by readers of this article is Suspension Inspection. The first is the Air Suspension Failure, Visit Workshop, and the second is the more critical, often shown in red: STOP VEHICLE TOO LOW. The vehicle level is continually monitored and readjusted whenever there is a difference of more than +/- 20 mm. Here are some of the most common symptoms of air suspension problems in the Mercedes GL450: If your GL450's ride quality has degraded significantly, there may be an issue with the air suspension system. The turbocharger then takes over and maintains this peak torque until 4,500 RPM before the torque depletes. Disconnect the lines to the compressor or the air reservoir to test the valve block. If the compressor is allowed to continuously operate with abnormal sounds, it may eventually result in damage to the compressor that will cause it to fail. Learn how to troubleshoot Mercedes-Benz Air Suspension Problems. Out of all the components in the system, this is one is the most prone to leaks. Your airmatic suspension is starting to leak and it will get worse over time. It sounds like the steering gear box and/or the power steering pump is going bad. Mercedes-Benz is sagging in front or back. These situations tend to overwork the compressor and shorten its life. That is with shipping charges ($15.35)already added in. Warning on Instrument Cluster. Owner. Here are things you can do to turn off the air suspension on your Mercedes Benz GL450. Sometimes it could be just a $5 faulty relay that may prevent the air suspension compressor from running. Another possibility is that the strut connection is loose. Even if the vehicle was parked for a while. A weak compressor will prevent the vehicle from rising or may cause it to rise slowly. A certain amount of suspension drop is normal in extremely cold climates. Cls550: Where is the cut off air suspension switch on a Mercedes You will also find the level sensor equipped with the air strut at the wheel. You can access it by removing the plastic cover in the wheel well. This button should turn off the air suspension on mercedes gl450. Cars nose dive when the suspension is faulty. Your Mercedes-Benz drops to the ground, and you may even end up towing your car because it is no longer drivable. I presume this is some sort of self defense mechanism to prevent drivers driving on collapsed springs. Note that the repair itself is not complicated. // Mercedes Air Suspension Reset - DIY or the Task for Professionals? Otherwise, a small leak may develop and cause your car to drop when parked for a few days. Inspect the level sensor at the rear torsion bar. Each sensor is connected to a link rod attached directly to the upper control arm. VehicleHistory.com Raise and support the vehicle. If it was a real leak, it should be dropping down ever time I turn off the engine. If you found this guide helpful, have any questions or comments, or would like to see anything added, leave a comment in the field below. Replacing air suspension parts will take some work, but can be done by a do-it-yourselfer. You will spray the lines and the different components with soap and water and look out for air bubbles. If a significant leak has developed, you may hear a hissing sound from the wheel housing area. If you get the AIRMATIC Visit Workshop message, your car may still drive but do get it checked out as soon as possible. I've replaced the front air struts in my 2012 cls 550 and my driver side is not leveled with my passenger side of the car and when I crank the car read more. Your email address will not be published. Learn how to use all of its capabilities. If youre experiencing problems with your Mercedes-Benz, the YOUCANIC full system diagnostic scanner can provide invaluable assistance in troubleshooting the issues. Here is what a good fuse should look like. That, my friends is bull$#!*. To fix this problem, you will need to replace the affected parts. 2023 The 2023 FCP Euro Winter Kit Sale is here with a fantastic offer on all of our kits. This article was very much helpful soo good of you author May god bless you, Hi There,i have a van in NZ its a 1999 Mercedes-Benz 230 vito, i live in The Nederlands and was told that i need a new air suspension compressor, i have tryed to find the model plus chassis no for the right one..is there any other compressor that will fit my van as its cheaper to buy here than in NZ. The latter could potentially lead to collisions or accidents that may result in property damage, serious injuries, or even fatalities. If you performed any suspension repair, ensure the level sensor at the front airmatic strut is not installed backward. The suspension on your vehicle is comprised of many different components. It will be even better if you have a YOUCANIC Full System Scanner with which you can conduct a series of tests to determine which air suspension component has failed. . When air suspension fails, you'll know it. Submit. Locate the air suspension switch. One symptom of a compressor issue is that the air suspension will be unable to maintain its proper level. Turn Off Suspension Switch Before Jacking/Lifting Vehicle With Air Most suspension systems are self-regulated and will automatically turn the compressor on and off according to the systems requirements. They either seize up, fail to produce the required pressure, or the brushes inside them wear out. YourMechanic All rights reserved. The next day you start having air suspension problems yourself. Buying a cheap European luxury car can be intimidating. This system replaced the traditional coil-springs found on cars leading up to this time with air-springs with electronic level control and adaptive damping at all four corners. Make sure the wires are not damaged. Our air to coil spring conversion kits are brand new and built to give your GL320, GL350, GL450 or GL550 a more reliable suspension system. As you fill the air struts/spring again, ensure the bellow covers are extended down and not folded upwards. You will be surprised when you realize that the air suspension is not that complex. GL450 Airmatic/Air Suspension Question | Mercedes-Benz Forum This is to check if the pump fuse is damaged. Your Mercedes GL450 can still run and be driven even with a bad air suspension. You can use a diagnostic scanner to retrieve and erase the fault codes. If you're noticing that your Mercedes GL450 isn't riding as smoothly as it used to, it might also be due to worn seals in the air struts. The wheel where you see the vehicle lowered the most is typically the air strut that may be leaking. The car adheres to a familiar rule as the original 1990s ML-Class. An air bag suspension system serves the same purpose as a standard suspension system, however, instead of using metal springs and liquid filled shocks, it uses a system of inflatable air bags filled with compressed air to suspend the vehicle off the ground. There are a few things that can cause air struts to wear out prematurely. In 2015, ahead of the 2016 model year, the production of the Mercedes Benz GLE 450 started. The Air Suspension Control Unit controls the suspension on Mercedes-Benz cars equipped with air suspension (N51). They are slightly more expensive than the two proposed solutions but still cheaper than replacing them with dealer parts. Another symptom of a compressor issue is a leak. Most of these products cost less than $10 and help you find air leaks faster and easier. This guide will be constantly updated as more information and opportunities to document additional content becomes available. Get help answering any questions you have, The valve blocks in W211/219 are not as failure prone as other Mercedes chassis where the solenoids are integrated such as W220/164. As soon as I press the door unlock button on my key, the air suspension will begin to raise it back to normal levels. Please advise, thank you. What repair and costs am i looking at. Hello I have an 2003 Mercedes s 500. They did not turn off my air ride suspension, causing my vehicle to be loopsided. Bachelor's Degree. The most likely first symptoms are a lower, sagging ride height, or the selectable ride settings that no longer function. The popping noise still exists. Note that it is not advised for You to drive with the suspension turned off. I have an issue with my vehicles' rear air springs. This is obviously not good for the engine. The compressor relay is responsible for starting and stopping the compressor. There is a little towing button right above the rearview mirror . The filter part number. The air suspension in the Mercedes Benz works by utilizing air springs with electronic controls and adaptive damping instead of the conventional coil and steel springs used in most automobiles. So Im recently became a new owner of a 2010 GL450. Id there a way of testing those? but if you dont want that hassle simply remove the fuse in the fuse panel under the hood. 7,212 satisfied customers. But the article relates to a W211 and not a W220. Unfortunately, if the air suspension collapses, the car will not be drivable. As you apply the leak detector on these locations, check them in the next 5 to 15 minutes. It would be best if you filled the air spring plunger correctly. The levels sensors are mounted on a bracket near the upper control arms on the front of the vehicle. From there, measure the ride height at each corner of the vehicle and record. 1 Answer: Hara Michiyo There is a towing button right above the rearview mirror, this button will turn off the air suspension on the Mercedes gl450. You may want to consider air suspension removal and convert the four wheels to coil springs. If you suspect a blown fuse, check the air suspension fuse first. The GLE 450 can deliver peak torque at an extremely low 1,600 RPM. Output can also be verified using a gauge at the compressor output. The compressor is what supplies the entire system with the compressed air required to inflate the airbags and support the weight of the vehicle. Lastly, you can consult the Mechanic to reset the vehicle for you. In this S-Class W220, the air compressor motor /pump is protected by Fuse 32, which is a MaxiFuse 40 Amp. Also, check the Fuse for the air suspension compressor. Just replaced a defective air spring on a 2012 R350 4matic, with air springs at the back and good old fashioned coil springs on the front. Like a standard shock, strut, or coil spring, these parts wear out over time and need replacement. Once you scan the car, you may get fault codes. in a few night a found the suspension down. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '95a320c9-3296-4e09-83b0-65ae33cb818e', {"useNewLoader":"true","region":"na1"}); Throughout the last twenty years, Mercedes-Benz equipped numerous vehicles in their lineup with air-ride from the factory. If the filter gets clogged, it can dramatically impact the life and efficiency of the air suspension compressor. 255K views 10 years ago One of the most advanced semi-active air suspensions on the road today, AIRMATIC from Mercedes-Benz reacts almost instantaneously to changes in road surfaces, evening. Is it possible to raise the car without starting the engine? How can you check if the air suspension compressor is not working/engaging? As long as your air suspension is not damaged or sagging in any way, you can apply the following methods to successfully reset your Mercedes air suspension: 1. If the vehicle drops over the next few days, the air suspension may not work to airlift the car. The main reservoir is a metal pressure vessel that stores compressed air at 13-16bar and is used to level the vehicle. As this system was introduced nearly twenty-years ago now, maintenance is becoming a must and you'll probably want to keep an eye out for the common failures of the system. The way the air system is designed, there isn't a direct air line connection between the valve block assembly and the individual rear air springs. You could pull down on the air spring plunger as you activate the fill/raise process of the air suspension. Both sides are now completely deflated and obviously I cant drive the car. If your vehicle is noticeably low but there isn't a red error message on the instrument cluster reading "vehicle level too low", a level sensor (or its linkage) is at fault. Do you hear the air suspension compressor kick in at all? How do you turn off the air suspension on a Mercedes gls450? It will be even better if you have a, Air Suspension AIRMatic and ABC Encyclopedia Resources, Assembly Instructions Mercedes S-Class DC W220 Airmatic (not models with ABC), Airmatic Shock Installation Mercedes-Benz S-Class W220 by Bilstein, Mercedes Benz W220 Front Air Spring Replacement (VIDEO), Mercedes Benz S-Class Front Air Shock Replacement with Arnott Aftermarket Replacement Parts, Air Suspension Fix Documentation (Forum thread on BenzWord), Rear Air Strut Removal and Installation of Arnott Replacement Parts, Mercedes Benz ABC System Troubleshooting Guide. Use a multimeter to test if there is 12-volt power at the connector. The GLE 450 can deliver peak torque at an extremely low 1,600 RPM. Even worse, only a few select shops know how to fix them. It effectively turns the GLE into a low-rider and you don't even need to be off-road to use it. The suspension is also adaptive and automatically switches the damping profile to Sport 1 above 100 mph. Release the button and wait for the indicator light to stop flashing. You may notice that the ride is bouncier and less smooth than it used to be, or that the car seems to "bottom out" more often. Wait for at least 15 minutes, then turn the ignition key back to the "on" position and start the engine. The Airmatic control module is located in the passenger compartment right side footwell. The warning signs are: Air suspension problems often confront owners of the Mercedes Benz GL450. It's common for them to leak from the hose connection at the reservoir as well as have a bag rupture from age. Once I get them installed, I will provide feedback. The Air Suspension Control Unit controls the suspension on Mercedes-Benz cars equipped with air suspension (N51). You can purchase a new relay and eliminate the possibility of the relay being the problem. You can unplug the electrical connector that goes to the air suspension compressor, as shown in the picture below. You will also have a very loose and floaty steering wheel.