Unknown metal clanging sound coming from my Jimny: Unable to diagnose

The service personnel even escalated the issue to Maruti, but are yet to diagnose the issue.

BHPian dileep recently shared this with other enthusiasts.

I have a Jimmy Zeta AT which has clocked 6000 km. After the 2nd service @5000 there is a sound coming from the car.

• It is metallic - like something is being obstructed. Somewhat like a 'spanner in the wheel' feeling.
• It's quite loud - such that people on the road are stunned by it.
• It does not stop if the brake is pressed.
• It stops if the car is halted immediately.
• The sound is not continuous but happens only sometimes for about 5-15 seconds.
• There is no way to tell when it will come - but it mostly occurs when the car is between 30-50 km/h and the foot is either off the A pedal or just lightly touching it. RPMs are around 1500-2000 and it especially happens when there is a down gradient.
• Never happened uphill (I live in Dehradun and our drives are mostly on hilly terrain).
• Never happened at speeds above 50-60 kmph
• All driving is 2 wheel and the gear slotted in D

I recently drove from Dehradun - Kasauli - Chandigarh - Dehradun and the sound did not occur when I was on the highway doing anywhere between 70-90 km/h. It occurred only on the downslope of hills and when I was at slower speeds.

To me, it seems to come from somewhere in the centre or rear-ish part of the car. Could it be the shaft? Or the Transfer Case? Or rear differential?

Here are 2 recordings: Jimny noise.zip

I took the car to NEXA, GMS Road Dehradun and they hoisted it to check if anything was loose. But everything looks alright. They turned the wheels to see if there was any play in the shaft but that also looked okay.

They couldn't diagnose the issue despite the noise occurring with the expert mechanic on the wheel. They then escalated the issue to the Maruti Regional Office. Two persons from the MSIL office took a road test and I shared the recordings with them, but they also did not have a clue about the reason.

So now they've asked me to leave the car with the workshop - which I agreed to do on the condition that they give me a replacement vehicle. Until the replacement vehicle arrives the Jimny is with me.

I am hoping that experts on our forum would be able to throw some light on why this is happening and what could be the issue.

Thanks

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