"Hopefully we will know within the next week."
One option for the 21-year-old is to return to LDM but the team's future is a little up in the air. Senior driver Nick Percat has agree to a move to Brad Jones Racing next year and there is a possibility the team enters just one car in 2017.
"Lucas is changing a little bit next year with how he's running his operation," Heimgartner says. "It might be one car there or maybe two. Then obviously there are seats open at Erebus and a couple of other places.
"I'd say it is an 80 percent chance [he'll return to the team next year]. We are still searching for a little bit more sponsorship but it is close.
"It would be nice this weekend to have some good results. A top 10 result - for me or Nick - would be huge for the team."
Heimgartner is in a unique position where he holds down a fulltime job on top of his racing career. He took a job in the finance industry at the beginning of the year when it appeared he wouldn't get a fulltime seat. But the opportunity to drive with LDM came along and he decided to juggle both.
"I work almost fulltime at Stratton Finance. It is hard to get that balance in life right.
"I get up at 5.30-6am and go train and then work for 9-10 hours and then train again after work and so I get home about 7.30-8pm.
"It is good mentally. It keeps you busy and stimulated. It also brings you back to reality when you sit at a desk 8-9 hours a day it makes you realise how lucky you are to go racing."