2008 Touareg. reset crash with scanner. srs light came back on again

[borshch]

2008 Touareg.
reset crash event with scanner.
after few days srs light came back on.

should crash data be reset in eeprom by taking off the airbag unit ?

[dragon100]

Which errors when light on ?

[borshch]

No codes just light is on

[dragon100]

Pretensioners was replaced or no ? Sometimes no errors but pretensioners bad, disconnect plugs, join resistors 2,2om , clear errors and report ...

[chez1]

this have to. one in the batery check cable positive or the batery is bad