Technical Car/Motor Issues > Renault Megane - 01 1.6 No brakes, then no fluid
Thread Author: Dave Replies: 9
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New Mon 2 Mar 26 18:40 
 Renault Megane - 01 1.6 No brakes, then no fluid - Dave
Did a semi emergency braking when I saw a moose at the side of the road. The pedal started firm, then went soft. After, I got a bit of pedal back when pumping, then no brakes at all. Then the low fluid light came on.

I filled up the fluid, and had a little braking when pumped a few times. Managed to get home on the handbrake, and the fluid was empty again.

Had a quick look at the rear drums and rear flexies, and all seems dry. Haven’t had a chance to look at the front yet. All the visible hard lines look good with no corrosion. ABS unit looks dry. Can’t see the master cylinder as it’s hidden away.

But where has all the fluid gone? And why didn`t I still have one circuit working?
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New Mon 2 Mar 26 21:42 
 Renault Megane - 01 1.6 No brakes, then no fluid - carmalade
Any white smoke with engine running? If there’s no external fluid leaks , then it could be leaking from the master cylinder into the servo .
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New Tue 3 Mar 26 07:54 
 Renault Megane - 01 1.6 No brakes, then no fluid - Dave
Didn’t notice any, but then I was trying to anticipate the roads on the way home with no brake. lol. But in theory I should still have one circuit left, shouldn’t I?
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New Tue 3 Mar 26 09:27 
 Renault Megane - 01 1.6 No brakes, then no fluid - bathtub tom
>> But in theory I should still have one circuit left,
>> shouldn’t I?

You'd think so, wouldn't you? I'm old enough to remember when dual circuit brakes were hailed as the new, wonder safety mechanism. I'm not up to date with modern stuff, so perhaps with ABS it's no longer considered necessary?

I'd be tempted to park the car somewhere dry, put some fluid in the reservoir, start the engine, firmly apply the brakes several times and see where the puddle appears on the ground.
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New Tue 3 Mar 26 09:30 
 Renault Megane - 01 1.6 No brakes, then no fluid - Zero
Yeah, Its clearly a big one, wont take long to appear.
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New Tue 3 Mar 26 18:19 
 Renault Megane - 01 1.6 No brakes, then no fluid - Dave
I’m just waiting for slightly drier weather, and I’ve a got a litre of fluid. Hopefully I’ll see it coming out somewhere.
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New Tue 3 Mar 26 09:43 
 Renault Megane - 01 1.6 No brakes, then no fluid - Andrew-T
Do the clutch and brake share the hydarulics ?
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New Tue 3 Mar 26 10:25 
 Renault Megane - 01 1.6 No brakes, then no fluid - carmalade
If the fluid reservoir is empty, there won’t be any braking effect no matter how many hydraulic circuits there are. Any evidence of fluid under the car if you pump the brakes while stationary?
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New Tue 3 Mar 26 18:22 
 Renault Megane - 01 1.6 No brakes, then no fluid - Dave
Except the pot is divided into 2 parts at the bottom, in theory I guess for each circuit. Yeah, I’ve got some more fluid and will take a better look when its a bit dryer out.
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New Tue 3 Mar 26 18:20 
 Renault Megane - 01 1.6 No brakes, then no fluid - Dave
No, fortunately, old fashioned cable.
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