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Sebastien Buemi says a software glitch contributed to the crash that eliminated him from the lead of ABB FIA Formula E's Santiago race and reckons it "was not my fault".

The Nissan e.dams driver led the first two thirds of the race from pole after Audi's Lucas di Grassi was excluded from qualifying.

But Buemi locked up at the fast Turn 7 right-hander while being chased by eventual race winner Sam Bird and Pascal Wehrlein, went off-line onto asphalt that had broken up in the race's scorching conditions and slid into the wall on the outside.

Buemi retired in the pits as a result of the incident, which occurred at the same point that he had crashed at heavily during FP1 earlier on Saturday.

"I cannot say too much - that's the problem," Buemi told Autosport when asked about the race crash.

"The only thing I can tell you [is] it was not my fault.

"Basically, we had lots of software issues during the day, which of course were related to the crash I had in FP1, the big crash. That was related to a small software issue.

"Unfortunately I had another issue in the race that was there from lap one and that basically made the crash happen. It didn't help me in that phase.

"But the qualifying pace is good. The race pace was really bad in Riyadh [Ad Diriyah], way better in Marrakech, and it was super good here.

"OK, Sam was following with Wehrlein but the rest were really far [behind].

"So even if it's a fucking bad day, a really bad day, I try to take the positive out of it because the pace I had today was good."

When asked if he could have gone faster were it not for the issue, Buemi replied: "Of course. Unfortunately it's part of the game and maybe the other guys will also say they had issues, but that issue was costing me lap time.

"As long as the asphalt was in a good shape it was not too bad, because missing the apex was not a big problem, but missing the apexes after when the asphalt was basically falling apart, you touched those stones and you were gone."

E.dams boss Francois Sicard said Nissan's day had been "a bit of a rollercoaster in terms of emotion" because of Buemi's FP1 crash.

"It was not his fault, we had a brake problem," said Sicard of that incident.

"Fortunately he wasn't injured, but it could have been bad.

"[But] it totally jeopardised the day - we had a great job from the mechanics to rebuild the car and to make it ready for FP2. Seb did a great job to recover."

Sicard said the software problems that impacted Buemi in FP1 and the race were "completely different".

"[It's] something that we have to analyse to be sure what's happened," he added.

"We had a little issue, I think. Something that was not helping the driver."