Over at McLaren, the increasingly beleaguered team principal Martin Whitmarsh told Press Association Sport
that he was "distressed" to hear of Horner's complaints.
"I'll be disappointed if it is our fault because in F1, NASCAR and IndyCar, we've not yet stopped a car, and we're very proud of that record," he said. "It undoubtedly caused some headaches at the beginning of testing and I hope we haven't caused anyone problems here.
"I don't want to be defensive about our electronics business because if you undertake to supply these things then you expect them to be faultless," he added. "We'll put our hands up if it's a fault that's derived from the hardware or the BIOS [but] you can also inflict ECU problems on yourself by how you set it up."
Whitmarsh promised to look into the matter and said that customers usually weren't slow to let him know if anything was amiss with McLaren's products.
"It is very complex [and] we're running a completely new system on an old established engine for one year," he pointed out. "But at least next year when we transition into the new engine, and with a lot of complexity around the ERS - which is far more complex than KERS - we've something that has the capacity to deal with it."
Subsequent reports on Monday quoted the managing director of MES Peter van Manen as saying that Webber's problem in Melbourne had been tracked down to the data systems in the Red Bull garage, rather than an issue with the ECU in the car.
Webber ended his home event in sixth place despite starting on the front row alongside team mate Sebastian Vettel. "I felt like I drove well all weekend," he said, "so it was frustrating to come away so low down in the points.
"Things went against me from the start: we had no telemetry on the grid, we had no KERS for the opening 20 laps and the car fell off the jacks at the first pitstop, costing me time," he explained. "When you find yourself in the middle of the pack and you don't have KERS, you're in a really hard place. You can't attack and it's hard to defend through the DRS zones."