Brake Fluid Change & Bleeding
Brake fluid absorbs moisture from the air over the years, and wet fluid boils at a lower temperature. When it boils in a hot caliper, the pedal goes soft because vapour compresses where liquid does not. Changing the fluid and bleeding the system restores a firm pedal and protects the internals from corrosion.
From AED 129Written quote after diagnosis, before work startsConvenience fee applicable · shown on your written quote
- About 1 hour for a full change, longer if the ABS unit needs cycling
- Pickup and delivery from your door
- Convenience fee applicable · shown on your written quote
- Diagnosis free with repair
Signs you need brake fluid change & bleeding
- The pedal feels soft or spongy, especially after repeated hard braking
- Pedal travel has increased and the brakes bite late
- Fluid in the reservoir looks dark brown or black instead of clear or pale amber
- The fluid has not been changed for two years or more
- Brakes fade on long descents or after several heavy stops
- A pedal that needs pumping before it firms up
What usually causes it
Moisture absorbed over time
The usual glycol-based fluid, labelled DOT 3, DOT 4 or DOT 5.1, attracts water through the rubber hoses and the reservoir cap. Even a few percent of water cuts the boiling point noticeably.
Air in the system
Air gets in after a hose, caliper or master cylinder job, or when the reservoir was allowed to run low. Unlike liquid, air squashes under pedal pressure, so the pedal goes soft until the air is bled out.
Heat cycling
Fluid that has been repeatedly heated breaks down and darkens, and the additives that protect the metal parts are used up. Dark fluid is a reason to change it even if it still passes a moisture test.
Contamination
Dirt, rubber particles from perished seals, or the wrong fluid added to the reservoir all upset the system. Silicone DOT 5 fluid, for instance, must never be mixed with glycol fluid.
How we do brake fluid change & bleeding
- 1
Test the fluid
We check the colour and test the moisture content with a tester, and read the fluid grade from the reservoir cap. You see the result before any fluid is replaced.
- 2
Pressure-bleed every wheel
New fluid is pushed through the circuit with a pressure bleeder, working in the sequence set for your car, until clean fluid with no bubbles leaves each bleed screw. The reservoir is never allowed to run dry.
- 3
ABS unit and clutch circuit
Some cars need the ABS pump activated with a scan tool so old fluid trapped in the unit is replaced. Cars with a hydraulic clutch share the fluid, and we bleed that circuit as well when it applies.
- 4
Pedal feel and level check
We confirm the pedal is firm and holds steady, top the reservoir to its mark, check for leaks at the bleed screws and road test. Old fluid is disposed of properly because it damages paint.
By make and model
BMW / Mercedes-Benz / Volkswagen group
Manufacturer schedules for these makes typically ask for a brake fluid change about every two years regardless of mileage. Check your service book for the exact interval on your model.
In Dubai, Sharjah and Ajman
Dubai summers combine high humidity with underbonnet temperatures that cook the fluid, so moisture uptake and heat ageing both run faster here. The two-year interval is not a European guideline that you can stretch because the car is rarely driven: a car parked outside absorbs water just as quickly.
Questions about brake fluid change & bleeding
Is this the same as a brake fluid top-up?
No. Topping up adds new fluid to old fluid, and the water stays in the system. A change replaces the fluid in the lines and calipers. The reservoir level also falls naturally as pads wear, so a low level is not always a leak.
Which fluid will you use?
The grade your car specifies, shown on the reservoir cap or in the handbook. Higher-grade fluid can sometimes be used in place of a lower one, but we do not mix silicone and glycol types.
How often should it be changed?
Most manufacturers say around every two years. If a moisture test shows high water content earlier, we recommend changing it sooner. We tell you the reading and let you decide.
Can this fix a soft pedal on its own?
If the cause is air or old fluid, yes. If the pedal is still soft after bleeding, the problem is a leak, a worn master cylinder or a hose, and we move to diagnose those.
What about performance cars?
They heat their brakes harder and often want fluid with a higher boiling point, changed more often. Tell us how the car is used and we will advise.
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