Robert Futterman's truck at the scene of the accident.

The scene of the crash that left two injured in the Hamptons, and Robert Futterman.

Former real estate broker Robert Futterman was arrested Tuesday for allegedly driving while on drugs, in connection with a Hamptons crash that injured a mother and her toddler son.

The disgraced wheeler-dealer — who was fired from his own firm in May and has a history of DWI arrests — allegedly T-boned a Nissan Maxima with his Ford F-150 around 11:23 a.m. at the intersection of Montauk Highway and Newlight Lane in Bridgehampton, police said.

The woman in the Nissan, 31-year-old Erica Beremeo Palacios, and her 3-year-old son were airlifted to Stony Brook University Medical Center with minor injuries, the Southampton Town Police Department said.

Cops administered a field sobriety test on Futterman, 60, and said it revealed he was driving while under the influence of drugs. They didn’t immediately say what kind of drugs.

Futterman was charged with a felony DWI and two misdemeanor counts of possession of a controlled substance. He was also charged with unlawful possession of marijuana.

Futterman will be held overnight and arraigned in Southampton Town Justice Court Wednesday.

This arrest follows a July 16 incident in which Futterman was charged for allegedly boating while intoxicated in Sag Harbor, according to the East Hampton Star.

He was reportedly out on $1,000 bail in that incident at the time of Tuesday’s crash.

The power broker, known for big retail leases in Manhattan’s poshest neighborhoods, had been chairman and chief executive of the newly created Newmark RKF, before he was ousted in late May.

As The Post reported, Futterman was fired “for cause” because he had been behaving “erratically,” including interrupting company CEO Barry Gosin during a presentation, sending “erratic messages” to various execs and a speeding ticket.

The firing also followed an April 30 arrest in Texas for marijuana possession after Futterman was allegedly caught with pot candy and other chewables at the Dallas/Fort Worth airport. He was released on $1,500 bond.

In a recent interview with The Post, Futterman denied having a drug or alcohol problems, and said the drug bust was over medical marijuana.

Immediately after his firing, he texted a Post reporter a photo of him and his driver at his Montauk “retirement shack,” which rents for $83,000 per month.

In August 2011, Futterman was arrested for driving while intoxicated in Bridgehampton with four children ages 12 to 15. He reportedly pleaded guilty to aggravated driving while intoxicated, a felony, and DWI.