Brake system failure

[Kelly]

Posting this coz it will help somebody in future ,

 

[K.o.N.o.S]

Hi members. I encountered this brake issue again.So I took the car to Mazna motors for inspection. Everything seemed fine and they bleeded the system again and replaced rear brake bushes ( they were pretty worn out). Lalith said that due to the complexity of the ABS braking system it’s pretty hard to diagnose this issue as they have to replace part by part to find out the source of this issue. Yesterday I was on my way from Colombo to kandy and suddenly brake padel sinked to the floor again. The issue was there until I reached home.(had no option but to drive very carefully through heavy rain). Now I am kind of convinced that brake master cylinder has gone bad. I am going to take the car to the local mechanic as I can’t risk taking the vehicle to Colombo knowing that brake padel is spongy. Anyway appreciate if you could share some insights. Thank you.

Edited October 27, 2018 by K.o.N.o.S

[Ruslan]

  On 10/27/2018 at 3:06 PM, K.o.N.o.S said:

Hi members. I encountered this brake issue again.So I took the car to Mazna motors for inspection. Everything seemed fine and they bleeded the system again and replaced rear brake bushes ( they were pretty worn out). Lalith said that due to the complexity of the ABS braking system it’s pretty hard to diagnose this issue as they have to replace part by part to find out the source of this issue. Yesterday I was on my way from Colombo to kandy and suddenly brake padel sinked to the floor again. The issue was there until I reached home.(had no option but to drive very carefully through heavy rain). Now I am kind of convinced that brake master cylinder has gone bad. I am going to take the car to the local mechanic as I can’t risk taking the vehicle to Colombo knowing that brake padel is spongy. Anyway appreciate if you could share some insights. Thank you.

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Have you Done the ABS unit bleeding using a scanner? i strongly advise do a better diagnostic before throwing cash to replace parts blindly.

[K.o.N.o.S]

  On 10/27/2018 at 3:43 PM, Ruslan said:

Have you Done the ABS unit bleeding using a scanner? i strongly advise do a better diagnostic before throwing cash to replace parts blindly.

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Yes.ABS system scanned and resetting done. Subsequently brake washers replaced and system was bleeded.

[Ruslan]

  On 10/28/2018 at 2:21 AM, K.o.N.o.S said:

Yes.ABS system scanned and resetting done. Subsequently brake washers replaced and system was bleeded.

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It's Not ABS System Resetting (Resetting and ABS Auto Bleeding is 2 Different Things). it's called "ABS System Auto Bleed". only Advanced Scanners (Launch Creed or OEM Scanners)  would support this feature. General Scanning would not detect Air in the ABS Unit.

[K.o.N.o.S]

  On 10/28/2018 at 6:27 AM, Ruslan said:

It's Not ABS System Resetting (Resetting and ABS Auto Bleeding is 2 Different Things). it's called "ABS System Auto Bleed". only Advanced Scanners (Launch Creed or OEM Scanners)  would support this feature. General Scanning would not detect Air in the ABS Unit.

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I think you are referring to bleeding the ABS modular using pressure bleeder and scanning tool. I just double checked with them and it has been done.