When to replace an accumulator in a Mercedes Benz?
If it starts to drop and the messages start coming more frequently, then you have blown an accumulator. Pull and inspect the front and rear axle accumulators – each are part number 2203270115 (the large ones). It’s likely both are blown. Replace as necessary. The life expectancy of these accumulators is around 10 years or so.
Where is the pulsation damper and return accumulator located?
QUOTE=Deplore;15152057]Ditto to above — two accumulators in the rear are both on the valve block, one accumulator is on the front valve block, and the pulsation dampener is behind the left front wheel, accessible by removing the fender liner. The ABC pressure sensor is also located there, so it’ll be obvious.
How does the ABC system work on a Mercedes Benz?
The ABC system is a computer controlled hydraulic system. A control module monitors sensors and sends commands to the valve blocks to add/remove fluid from the struts. The control module’s goal is to keep the chassis level at all times. Should any problems occur, it will inform the driver with a message on the dash.
Why should you replace your accumulator / drier when you..?
Especially if your A/C compressor failed internally then there will likely be metal shavings scoured throughout your A/C system waiting to cause future problems. It may be tempting to skip the drier and save yourself $50 at the time of purchase but it is only going to cause you more problems and more money in the long run.
If it starts to drop and the messages start coming more frequently, then you have blown an accumulator. Pull and inspect the front and rear axle accumulators – each are part number 2203270115 (the large ones). It’s likely both are blown. Replace as necessary. The life expectancy of these accumulators is around 10 years or so.
When do you need a new accumulator / drier?
It is absolutely crucial that you purchase a new accumulator/drier when you buy a new compressor. Often times the source of the problem in your car’s air conditioning is some type of contamination that got into the compressor and messed things up.
The ABC system is a computer controlled hydraulic system. A control module monitors sensors and sends commands to the valve blocks to add/remove fluid from the struts. The control module’s goal is to keep the chassis level at all times. Should any problems occur, it will inform the driver with a message on the dash.
What should I do if my ABC system is not working?
If the valve block is not holding a good seal, then the first action is to change the ABC fluid filter, perform a procedure called a “rodeo” that exercises the system, and then replace the filter again. This will sometimes clear up the problem, at least temporarily. This will cost around $300.