Home CAR & BIKES Faced the first breakdown of my Tiago EV due to the HV...

Faced the first breakdown of my Tiago EV due to the HV Critical error

So the question remains why do these cars display such warnings when at such low SOC and everything gets normal when you charge it ??

BHPian userAditya recently shared this with other enthusiasts.

First breakdown of the car with ‘HV Critical Alert’ and ‘Gear Shift Denied’ at 10% battery which resulted in calling for RSA. Car was only a kilometer away from my home, so I wasn’t worried that much but slightly panicked due to that HV Critical Alert.

So according to the Tiago.Ev manual which has shown various ‘Limp Home Mode Telltale Warnings’.

You can see as said in the manual, the vehicle did not follow the process when SOC<=10%. That is what bugged me, has to be a software issue?

The telltale indicator was Blinking in the instrument cluster. I did shut down the car waited a few minutes, after restarting it, the car would go into D, move a few inches and halt again!

I immediately called our service center advisor who promptly received my call and advised me to tow the vehicle to nearest charging station or at any charger and charge the vehicle. He also suggested never to go below 15-20% SOC.

In the meantime I open the Zconnect app and I used the ‘Run Diagnosis’ feature in it. It showed ‘Traction Motor Health Status’ error

So now the towing vehicle comes within 45 minutes, and vehicle is towed in such a way which is not advised/shown in the Tiago EV manual.

But the RSA towing personel said they tow all the EV’s in similar way.

So he towed the vehicle is such a way that the front wheels were in the air and rear wheels were touched on the ground rolling as we go ahead. I had put the car in Neutral and the handbrake was disabled.

So approximately towing the vehicle for approximately 10 minutes at a very slow speed, he then released the car in my parking. When I went to open the door of the car, I saw blinking ABS Error, and TPMS error in the instrument cluster.

I panicked and immediately asked the towing person is that normal after towing in such a way, he advised to shut down the vehicle by pressing the Start/Stop button for more than 5 seconds, the car finally shut down.

He then suggested put the vehicle on charging first and so we did.

So in the morning when charging was done, I unplugged the charging wire, like usual I wait for 10-15 minutes and then I started the car and all the errors were gone.

I then went out for a 12 kilometer ride and faced no problem what so ever.

Note :

  • Never faced any issue till today.
  • Only did fastcharging last year in July. Always do 3.3kw slow charging.
  • 2 sevicing sessions done till now. 3rd due in 25 days.
  • Odo is at 6980 kilometers.

I would like to mention user ‘tarunjain’ faced similar problem for his Nexon EV back in March 2023.

So the question remains why do these cars display such warnings when at such low SOC and everything gets normal when you charge it ??

Read BHPian comments for more insights and information.

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