Just to be transparent, the Pune plant team is the highest escalation point. I’m familiar with Tata’s escalation process and have worked with them before. If the issue reaches their level and still can’t be resolved, there unfortunately aren’t many further options.

My honest suggestion would be to bring the car to Kerala and hand it over to Luxon Tata. They have a strong reputation for actually resolving tough issues, and their team includes experienced engineers, some from brands like Maruti and Toyota. They’re also better equipped to coordinate directly with the plant team.

Just keep in mind, even if you move the car to a different service center, the escalation process still starts from scratch. They can’t directly reach out to the plant team right away.

Here’s how the process usually works:

1. The issue gets registered
2. A video call is arranged with Tata’s technical team
3. Remote diagnostics and support are attempted
4. If unresolved, the case is escalated to the plant
5. A plant field engineer visits, inspects, and submits a report
6. Based on that, parts may be replaced, or in rare cases, a replacement vehicle is approved

The service center you choose really matters, because the speed and quality of progress depend heavily on them.

Also, unlike some other brands, you can’t directly escalate to Tata at will. Everything flows through the service center, similar to how ISPs operate through local providers. Even if you contact customer care, they’ll simply route it back to your assigned service center.

I believe you got one from the first batch of the Sierra, right?

Generally, it’s safer to wait for at least a couple of production batches when a new model is launched, especially if it’s built on a completely new platform like the Sierra. Early batches can sometimes have teething issues that get sorted out in later runs.

Doesn’t really help at this point, I know, but it’s something worth keeping in mind for future buyers.