[Archer797]

A lot of Altroz owners might be experiencing a rattling (kirr-kirr) sound from the left hand side portion of the bonnet area. Some of us raised it with Tata team and were going back and forth with them. At some point Tata team came around and said that this sound is present in all cars and the intensity of it varies from car to car. In other words either they had no clue what was causing the issue or did not want to invest time/resource to fix it.

Some of us started working on this and identified the issue to be largely due to rattling of the counter-weight attached to the shift linkage assembly (gear-box).

I went ahead and tried to fix it at home with stuff found at home and managed to stop the rattle and fix the issue for good. A lot of owners have applied this and found the issue to be gone for good.

Some owners still are hearing some rattle and the same are largely due to other issues possibly in the dashboard area (which some of us are investigating). Some owners have reported that opening the glove box stops this residual rattles. We are still investigating it and will find a way to address it.

Wanted to share this here to ensure all affected owners can do this and ensure you have a more quieter ride on higher gears.

Please refer attached article for details.

[GTO]

Thanks a ton for sharing! Converting the PDF to JPEG for easier access for BHPians





And the videos:

https://www.youtube.com/watch?v=A5DelDspHk8

https://www.youtube.com/watch?v=pmva4ADW4Vw

[shancz]

Thank You for the fantastic effort, diagnosis and solution.

I don't own an Altroz but your description of the issue(kirr-kirr) is pretty sound and the next time I hear this sound in any car I will immediately try to find the loose stuff that needs a washer/tightening. Although I would have never been able to venture this far(counterbalancer) on my own.

Originally Posted by Archer797

1. At some point Tata team came around and said that this sound is present in all cars and the intensity of it varies from car to car.

2. In other words either they had no clue what was causing the issue or did not want to invest time/resource to fix it.

1. So we should take comfort in the fact that since a lot of people are facing this problem(indicating an issue from factory), it is not a problem. Hope they didn't try to pass it off as a safety feature to keep you awake

2. I had said somewhere earlier that the biggest limitation in TML cars is their powertrain but I stand corrected. Its their attitude. Your experience reaffirms that. Maybe they thought a small noise troubling customers wasn't worth their time. This is what differentiates TML from the other manufacturers.
They can make an entire car but can't dedicate time to make sure that every issue us resolved, at least when reported

What you guys did was exactly what TML should've done! They spent man hours and resources in checking and telling customers that others are also having this issue but couldn't dedicate a few minutes to actually figure out the issue? This defies common sense but surprisingly common these days.

IMO, TML should focus on correcting their attitude, the cars will follow.

[Nikhil Beke]

IMO, TML should focus on correcting their attitude, the cars will follow.

Agreed wholeheartedly- and the same attitude is spilling over to their showroom staff as well. Having (nearly) burnt my fingers with a Ford diesel BS6 engine, I asked them regarding DPF issue on diesel Altroz on my latest test drive (had read extensively about Ford cars being unable to regenerate their DPF in spite of extensive highway runs). SA flat out denied the very existence of DPF as a physical filter("it's a liquid we fill during servicing") while his senior told me that with 'Adblue', they have dispensed off with the need of DPF on their car.
I know about the tragedy/comedy of errors that showroom staff is infamous for, but Ford people at least knew their cars had DPF, and had none of the know-all attitude/confidence TML chaps had.
Of course I left the showroom as clueless as I was when I entered.

[lsjey]

One should congratulate TaMo for creating such engaging products for consumers! This is something all other manufacturers should emulate, IMHO. Given that TaMo is selling cars at a decent clip, this is definitely a good strategy. TaMo should advertise this, aspect: "More engaging cars! Find and fix problems on your own! More problems per car, gives you more opportunities to find fixes!"

Regards,
lsjey

[rd18]

Originally Posted by Archer797

Some owners still are hearing some rattle and the same are largely due to other issues possibly in the dashboard area (which some of us are investigating). Some owners have reported that opening the glove box stops this residual rattles. We are still investigating it and will find a way to address it.

First of all, thanks a ton for bringing this out.
I didn’t knew it was that common!

Here’s mine from dashboard.

https://youtu.be/sckTC5web3I

And

https://youtube.com/watch?v=AchPBOQdyXY

(for some reason YT detects as shorts (aspect ratio)).

Is this due to a loose speaker wire? Haven’t tried opening gearbox, but will do.

And your videos are for NA petrol engine. Anyone tried fix on their Diesel engine?

Informed dealer but okay to wait till 2nd service to get it resolved.

[Archer797]

Originally Posted by rd18

First of all, thanks a ton for bringing this out.
I didn’t knew it was that common!

Here’s mine from dashboard.

https://Youtu.be/sckTC5web3I

And

https://Youtube.com/watch?v=AchPBOQdyXY (for some reason YT detects as shorts (aspect ratio)).

Is this due to a loose speaker wire? Haven’t tried opening gearbox, but will do.

And your videos are for NA petrol engine. Anyone tried fix on their Diesel engine?

Informed dealer but okay to wait till 2nd service to get it resolved.

For the rattle you are hearing from the dashboard area, try driving with the glovebox lid open. In most cases the noise will stop. We are unsure what is causing this but will figure out soon.

My video/steps are for Altroz NA. As long as a gear-box shift linkage has a counter-weight, the solution suggested will work. There is no need to open the gearbox (doing so will void warranty). You will only insert washers to the counterweight to arrest the rattle.

[rd18]

Originally Posted by Archer797

For the rattle you are hearing from the dashboard area, try driving with the glovebox lid open. In most cases the noise will stop. We are unsure what is causing this but will figure out soon.

For me, the noise doesn't stop with glove box lid open. I will try again though. Maybe its from the speaker on left side.

[Archer797]

Originally Posted by rd18

For me, the noise doesn't stop with glove box lid open. I will try again though. Maybe its from the speaker on left side.

There was also a mention of a dashboard clamp which is loose. I am trying to get more details on this. Will keep this thread updated as I when I gather more data around this.

In the meanwhile, get the speaker wire checked and keep us updated.

[rd18]

Originally Posted by Archer797

There was also a mention of a dashboard clamp which is loose. I am trying to get more details on this. Will keep this thread updated as I when I gather more data around this.

In the meanwhile, get the speaker wire checked and keep us updated.

I had to visit service center when DPF light went ON. Asked about this as well. SA sent a door specialist with me on test ride but at that time the noise didn’t come. He wanted to hear it first hand and videos were not much useful for him.

Due for 2nd service next month, but again wonder how to repro this issue at that time.

[Archer797]

Originally Posted by rd18

I had to visit service center when DPF light went ON. Asked about this as well. SA sent a door specialist with me on test ride but at that time the noise didn’t come. He wanted to hear it first hand and videos were not much useful for him.

Due for 2nd service next month, but again wonder how to repro this issue at that time.

If you actually check the first link in the attached document, it will show you the rattling counter-weight. This is something you should get addressed. This solves issues to varying degree around 30-90%.

This alone does not solve the issue since the rattle is due to multiple reasons. Dashboard and Glovebox are other culprits too. We dont know how to solve these.

In mycase, the rattle dropped by almost 80-85% after fixing the counter-weight rattle. Balance 15% noise stops when I drive with the glovebox lid open.

[rd18]

Originally Posted by Archer797

If you actually check the first link in the attached document, it will show you the rattling counter-weight. This is something you should get addressed. This solves issues to varying degree around 30-90%.

Yours is petrol engine, so that works.

Like I mentioned, mine is a diesel one and the gearbox is positioned differently. It doesn't rattle.

Another owner and a distinguished BHPian shared rattling noise observation from his new Altroz Diesel yesterday.

https://www.team-bhp.com/forum/official-new-car-reviews/226764-tata-altroz-1-5l-diesel-official-review-12.html#post5183646 (Tata Altroz 1.5L Diesel : Official Review)

Originally Posted by PrasannaDhana

Thanks.

That link is the shift linkage counterweight rattle in Petrol NA Altroz. In diesel, it's inverted and it was intact and didn't move when we checked it today at the service center.

The noise I was talking about is from the EGR flaps.

really useful when he is sharing his observations and enhancing knowledge. Thanks for this thread as well.