[purohitanuj]

Originally Posted by ais

It seems Maruti Suzuki India Ltd. has dropped it's service and customer satisfaction standards....

Get the pins checked for straightness and true-ness. I recently saw a Scorpio with exact same issue and the pin/bolts were very slightly bent. This caused Front right wheel to lock up only when the tyre rotation was at certain angle and brake pressed was greater than some arbitrary threshold.
It was corrected by replacing the Pin/Bolts.

[nitin_knw]

Originally Posted by SS-Traveller

Are you seeing any unusual pattern of tyre wear?

I believe the same it may be issue with ABS system, since it is not intermittently unlocking wheel to avoid a wheel lock, get the ABS system including EBD checked.

[audioholic]

Looking at the video posted, where is the wheel lockup claimed in the original post? The front right wheel locks up only towards the end which would be less than 10kmph and it's normal for any ABS system to stop performing below that speed. The grinding noises present during hard braking is due to the ABS pressure regulation under wheel lockup. Is there something else that didn't catch my eye? And no that wasn't 100% braking for sure. Else the ABS action would have been much more prominent and a lot more noise. The front suspension has hardly dived in.

[advenk999]

Originally Posted by audioholic

Looking at the video posted, where is the wheel lockup claimed in the original post? The front right wheel locks up only towards the end which would be less than 10kmph and it's normal for any ABS system to stop performing below that speed.

Totally agree. I could barely notice the wheel lockup in the video posted and was trying to notice if there was any after watching it a couple of times.
The minimal lockup towards the end seems okay as the spot is wet and mild locking below 5kph on wet conditions is okay with the ABS working in place to cut down wheel spin.
In any car without ABS, you would be noticing wheelspin by now.
Maybe OP should take a video and test this in an isolated location with ranging speeds and see how this works from a relatively higher speed to progressive lower speed.
From this video posted, there is little to no case to really fight against.

[Rajeshkrish]

Hi,
Actually this issue is very common with Baleno, my father had an accident because of this issue, the pedal becomes hard to press after the hard braking. Even this issue comes whenever you go into a speed breaker which has some sand or soil before the bump. I tried doing it in a ground with soil and this problem happens very normally. I highlighted this issue to the top management at Maruti Suzuki and it is of no use. They're not ready to accept this design flaw and usually get the same response that there is no issue with the vehicle. I also understand this issue in some other Maruti vehicles. I haven't faced this kind of issue in another brand. This issue is more like the ABS understands the road condition as black ice situation and tries to avoid wheel locking by ABS giving pulses to the brake, that in turn increases the stopping distance. You can feel this pulse in the pedal. This is kind of a scary situation since you'll be trying to stop in the hard braking.Now I make sure in advance with respect to the road condition and plan the braking.

[ais]

Originally Posted by purohitanuj

Get the pins checked for straightness and true-ness. I recently saw a Scorpio with exact same issue and the pin/bolts were very slightly bent. This caused Front right wheel to lock up only when the tyre rotation was at certain angle and brake pressed was greater than some arbitrary threshold.
It was corrected by replacing the Pin/Bolts.

Thanks. Which pins and bolts? All in the caliper and wheels?

Originally Posted by Rajeshkrish

Hi,
Actually this issue is very common with Baleno, my father had an accident because of this issue, the pedal becomes hard to press after the hard braking. Even this issue comes whenever you go into a speed breaker which has some sand or soil before the bump. I tried doing it in a ground with soil and this problem happens very normally. I highlighted this issue to the top management at Maruti Suzuki and it is of no use. They're not ready to accept this design flaw and usually get the same response that there is no issue with the vehicle. I also understand this issue in some other Maruti vehicles. I haven't faced this kind of issue in another brand. This issue is more like the ABS understands the road condition as black ice situation and tries to avoid wheel locking by ABS giving pulses to the brake, that in turn increases the stopping distance. You can feel this pulse in the pedal. This is kind of a scary situation since you'll be trying to stop in the hard braking.Now I make sure in advance with respect to the road condition and plan the braking.

Thanks! Also the previous posts bt Advenk999, Audioholic and Shancz are pertinent.

This issue was not present in the first 3 years. In fact, on the day I took delivery of this car, I drove straight from Panchkula to Fatehabad. On the Patiala highway, I applied the brakes hard at 100% in an emergency when a wayward motorcyclist zig zagged and drifted in front of me (not good for running in, and he duly got a dose of pepper spray to help him see the road better in future). No issues with ABS or wheel/tyre misbehavior in this, and any other instance in 3 years. Then post lockdown 1, in Oct 2020 on the drive from Pkl to Mumbai, I sensed things going strange. Ever since, I don't have full confidence in the brakes. Finally, having driven several cars over the years, I can 'feel' these things.

In any case, I need to have a low thudding sound from right rear suspension area checked. I will have the brake issue- the ABS distribution and pins checked, as suggested by VGAquarious and purohitanuj.

I've sounded Mr. Manish at Sai Service, and will update here asap.

[purohitanuj]

Originally Posted by ais

Thanks. Which pins and bolts? All in the caliper and wheels?

Please check the long caliper bolts which also acts as guide pins for the whole assembly. There are not completely threaded and have threads on one end only.

[ais]

Originally Posted by purohitanuj

Please check the long caliper bolts which also acts as guide pins for the whole assembly. There are not completely threaded and have threads on one end only.

Took car to Sai service center, Andheri as scheduled.

Checked both caliper pins, and caliper retaining/locking nuts of each front wheel. Checked all 4 lug nuts holding the wheel of each side. All are straight. Discs rotate freely. Pads and rotors cleaned. No reduction in brake fluid level, so there cannot be any leakage in dual Master cylinders. Swapped front left and right wheels. Took car up on lift, spun wheels and they rotate freely and true. Checked wheel alignment- that was correct as well.

Tested in one low speed hard braking and it seems ok for now. Will provide final update in a few days.

[Rajeshkrish]

Originally Posted by ais

Took car to Sai service center, Andheri as scheduled.

Checked both caliper pins, and caliper retaining/locking nuts of each front wheel. Checked all 4 lug nuts holding the wheel of each side. All are straight. Discs rotate freely. Pads and rotors cleaned. No reduction in brake fluid level, so there cannot be any leakage in dual Master cylinders. Swapped front left and right wheels. Took car up on lift, spun wheels and they rotate freely and true. Checked wheel alignment- that was correct as well.

Tested in one low speed hard braking and it seems ok for now. Will provide final update in a few days.

Good to know. Let us know if it the braking is good in some smooth surfaces or in soil (better to be in open ground without people or cars)

[ais]

I've been using the Baleno after the wheel swap and calipers servicing. I did not face any problems thereafter. Now I've tested the car under hard braking at speed of about 30kmph on a smooth paver block surface as well as wet tarmac. No problem whatsoever- no locking.

The front right shock absorber locked up during a tyre change. The service centre experts said that if the front shockabsorber is weak and the car is jacked too high, this happens. So there is a chance that a weak shock absorber may have contributed to the problem, though not caused it because the shockabs were replaced just 2 weeks back, whereas the problem of locking dissapeared after the wheel swap and caliper servicing was done in January.

I've had all 4 shock absorbers replaced.

The thudding sound on rebound from the rear right was due to the rear right shockab being weak.