Technical Brake Lamp İndicator Problems

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Technical Brake Lamp İndicator Problems

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Hello, the brake warning light is on. It stays on even when the handbrake isn't engaged. Is this a chronic problem with the 169 model? Where should I start looking for solutions?
 

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Correct it a combined fluid and handbrake warning

If the light is on, it could be either

The first quick check would be fluid, it's important to do as soon as possible and not driven the car until you do, if it's gone down there must be a leak somewhere and you could loose brakes

If the level fine, take the top off and give it a general shake, check the electrical connection, both and brake and fluid can be switches and wiring can be tested with a simple multimeter
 
How did you remove the fluid?
I dipped a large bore clear pipe in and put my finger over the end and pulled it out. This renoved about 5 ml each time. It too a few minutes. Used a small bore pipe to get the last out. Sad but true..... LOL
 
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But isn't there a sieve, a filter that blocks anything going inside reservoir? Mine has that.
No just aruuber sock that lifts out. On the Mk the clutch and brakes have separate systems so are not connected. If I remember right once empty the reservoir actually lifts off so fitting was not hard.
 
The OP is saying nothing... We just trow all possible scenarios.
@atakan123123, did you check the brake fluid level?
They haven't been on since Friday it xmas
It's pointless filling up thread with every possible solution

Ecu
Dash
Fluid sensor
Hand brake switch
Wire to handbrake
Wire to fluid sensor
Chassis ground
And so on

Best test something and wait for a reply, otherwise the correct answer, probably the first post gets lost in pages of possible solutions

Low fluid is the most likely
 
Koalar always continue to surprise me. Thank you very much.

Thank you so much for your valuable answers. I haven't been able to take care of my car or myself for a while due to a minor health issue.
Yes, it turned out the problem was due to the hydraulic fluid level approaching the minimum. After topping up the fluid, the warning light went off.
There was some brake fluid leaking from my rear brake pistons. I had already bought new ones but didn't have time to change them. I think I'll need to install new pistons soon.


Honestly, I’m very glad that it wasn’t an electrical issue or a sensor failure. It turns out to be the simplest and most cost-effective problem I could have faced.
 
Rear slaves are easy to replace but you'll need to spin the cylinder off the brake pipe. If you simply turn the flare nut, the steel pipe will twist and break.

Once the cylinder is removed, use a gas lighter flame to warm the flare nut. That will soften the plastic coating and free the nut. The bare metal will need protection with paint or copper grease. While under there, check the flexible rubber hose for age related cracking. I cut mine, spun off the fragment and replaced the swing arm hard line and rubber with a long braided hose.
 
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