Launch Mode Details
A few weeks ago, Tesla openly admitted to limiting power output of vehicles that too often use launch mode.
The initial exchange went down like this on Tesla Motors Club Forum:
"Unfortunately I’m here to say this is true. My car was limited just after the 8.0 update and at first I was convinced it was related to that. I did lots of testing and emailed Tesla my findings. Before this limitation my car would pull around 1600 amps from the battery and 512 KW of power when fully charged, now the car will only pull around 1500 amps and 480 KW of power, a loss of about 40 HP on a 4 month old car.”
A Tesla representative responded to his inquiry with this statement:
“Thank you for your time. To recap our conversation, using launch mode places an increased stress on the entire powertrain accelerating aging and fatigue of various components. The computer systems automatically track launch mode usage and continually estimate fatigue damage. Depending on how launch mode is used, the computer may eventually limit the available power during launch mode to protect the powertrain. Note that this is a common strategy also employed in other high performance cars. As discussed, upgrading to the P100D ludicrous will remove this limit and will not be limited in the future as the P100D does not have this limit for launch mode.”
“Based on your input, we have decided to remove all software performance reductions tied to frequent max power usage. These changes will roll out with our next software update."
The next software update is expected in 3 weeks or so. McNeil continued:
"We had put these reductions in place to proactively protect the powertrain from wear and tear. Instead, we will monitor the condition of the powertrain and let our customers know if service is needed so that we can take proactive steps, such as by replacing parts if necessary, to maintain the vehicle’s performance."
McNeil says that replacing parts will be covered under warranty, though we're sure some damaged parts could fall into the abused category and not be included as a warranty repair.
It seems Tesla is keen on listening to owners and this is certainly not this first time the automaker has responded to owner complaints in a very timely manner.