Mercedes Classe S W221 - Repair abs pump

What is the ABS block?

What is the purpose of the ABS block?

It was the German company Bosch that marketed a first version of ABS block in the late 1970s. The function of the ABS block in a vehicle is to prevent, during emergency braking, the wheels from locking.

The ABS system to keep control of the automobile

Before explaining the ABS block, it is important to understand the ABS system as a whole. There are for the Mercedes S-Class W221 automobile ...

• The wheel speed sensors: each sensor is placed in front of a target, which is a gear wheel that is also called a phonic wheel.
• The ABS block: how is it composed? Let's see it in more detail below ...
• The magnetic targets: they are, depending on the car models, directly integrated into the wheel bearings.

The ABS block

Let's look at some of the components of the ABS block of the Mercedes S-Class W221:

The motor driving a hydraulic pump

It transfers hydraulic energy into mechanical energy.

The hydraulic unit

It consists of several components including...

• A hydraulic pump that locks the brake pedal so it doesn't dig in.
• Solenoid valves that eliminate the need for a brake compensator.
• Pressure accumulators that are pressurized gas reservoirs that can hold a variable volume of a pressurized liquid.

The ECU

Warns the driver of a technical problem via a warning light on the dashboard.

The Mercedes S-Class W221 ABS block repair

Main manifestations of the defective ABS block

This manifests itself mostly as a result of... The vehicle lacks stability in wet driving conditions or an ABS sensor fails.

What are the services of Diag-Engine company?

Diag-Engine is a French company that has largely proven itself regarding its automotive know-how. Please note: Diag-Engine does not sell any new ABS blocks.

Concretely...

It takes one week for you to get your ABS block back as new.

You have to note the reference of your failed ABS block to order its repair. Then you just have to make your payment the part present in your cart after selecting the make and model of car you own. Finally, send your failed ABS block to the address indicated as soon as possible.

We are here to help you by tel or email at the slightest hesitation.

The address to which you should send it to us is listed at the bottom of the page.

Some customer comments

• The Abs block is now reassembled and the braking has regained all its power!
• I do not usually leave a comment when making a purchase, but there I do it without hesitation for my ABS block Mercedes S Class W221: 5 stars thank you!
• The garage asked me 1100 € to replace my ABS block. By going through Diag-Engine, I got it for 380 €. Phew thank you !

You have the possibility to make your payment with Paypal.