Knocking sound when car is in reverse and brakes depressed

**jtphl** · March 23rd, 2010 04:10 PM

What could be wrong on my 2008 Altis? Upon depressing of brake pedal while in Reverse motion, there will be a knocking sound. For every depress one annoying knock sound.

Car has been brought to Toyota Otis for cleaning and realigning of brake pads and brake pad support clips.

No sound produced when in Drive (forward) mode.

**rex31angel** · March 24th, 2010 11:04 AM

"baka engine supports or may problem sa tranny,same thing happened sa civic FD ng pinsan ko.."

**bluerolla** · March 24th, 2010 11:10 AM

Same thing happened to our 2001 rav4. sa reverse langnaririnig yung "thud" sound. pero nawala na din eventually.

**jtphl** · March 24th, 2010 12:19 PM

as long as it is in Reverse mode, I hear one knock for every depress of brake pedal.

I brought my unit to Toyota already for cleaning and adjustment of brake pads and the retainer clips. just slight change happened, sound became slightly softer. A very very minimal improvement.

**J97** · April 6th, 2010 03:57 AM

same with my 2 toyota. only in reverse when you step on the brakes. i think this is normal. i just check/ clean / adjust brakes every 5k.

**digitel** · April 6th, 2010 05:40 PM

Hmmm I think you have to calibrate your rear brakes, are those drum brakes? Ganyan din po kasi dati hi lander namin, nababago kasi yung ikot niya kaya minsan pag reverse mo tapos pag break biglang may knocking sound.

After my dad calibrated the rear drum brakes, ayus na siya ulit. It works fine. Pero bakit parang sa toyota puro ganyan? I wonder

**LN106G** · April 10th, 2010 07:57 AM

Originally Posted by jtphl

What could be wrong on my 2008 Altis? Upon depressing of brake pedal while in Reverse motion, there will be a knocking sound. For every depress one annoying knock sound.

Car has been brought to Toyota Otis for cleaning and realigning of brake pads and brake pad support clips.

No sound produced when in Drive (forward) mode.

Your brake shoes on the rear drums are probably thinned out by now. You can have it adjusted or change it with a new one. Also check your stabilizer links. If you can easily move them by hand its time to change them. You can have them injected by zee or cruven if you are on a "budget meal" but if you have the budget OEM is best but genuine 555 will do. Don't forget to change also the 2 stabilizer C-bushings (the OEM's cost only P147/pc at casa) when changing the stab links

best regards

**likot** · April 15th, 2010 11:21 AM

Originally Posted by jtphl

What could be wrong on my 2008 Altis? Upon depressing of brake pedal while in Reverse motion, there will be a knocking sound. For every depress one annoying knock sound.

Car has been brought to Toyota Otis for cleaning and realigning of brake pads and brake pad support clips.

No sound produced when in Drive (forward) mode.

Ganyan din problem ng Advie ko before. Check mo turnilyo ng brake caliper sa unahan kung kumpleto. Yung sakin kasi isang turnilyo lang nakalagay yung kabilang dulo walang nakalagay nalimutan malamang ng casa ibalik.