Methods and systems are provided for controlling a vehicle engine to adjust exhaust warm-up strategy based on a vehicle network information. In one example, in response to an expected decrease in temperature of a catalyst of a vehicle below a threshold and an estimated duration thereof based on communications external from the vehicle, a method may include delaying catalyst heating actions, when the catalyst heating actions are determined to be unable to heat up the catalyst to threshold temperatures. However, the catalyst heating actions may be enabled when the catalyst heating actions are determined to be able to achieve the threshold temperature within the duration.

The systems and methods provided herein are directed to enabling a vehicle to enter into and/or exit from a transport mode using a backup fuse. The vehicle may enter into the transport mode from a normal mode when an ignition of the vehicle transitions from off to on if the backup fuse has been removed and the vehicle has been placed in park or neutral. The transport mode may, in part, reduce electrical loads and power as well as limit other components of the vehicle during shipping. The dealer, or other party, may remove the transport mode when the vehicle arrives and is ready to be sold. The vehicle may exit the transport mode when the backup fuse has been re-installed and the fuel cap or lid has been removed or opened, thus returning the vehicle to the normal mode.

A method of controlling heating of a hybrid electric vehicle is provided. The method includes receiving a heating request from a driver; determining whether an entry condition of pre-FATC engine ON request (PFEOR) control is satisfied; checking whether the vehicle is capable of entering a HEV mode; determining whether the vehicle enters an idle mode for the PFEOR control; issuing a command for a target engine torque value and a target revolutions per minute for the idle mode to an engine control unit (ECU) from a hybrid control unit (HCU); and performing an engine idle speed control along with engine ON based on the command.

A method for controlling a powertrain of a vehicle may include: controlling, by a controller, an engine of the vehicle to be operated when an ignition key of the vehicle is in an on state; and determining, by the controller, whether the controller generates a command changing a state of a clutch based on an operation state of the vehicle. The clutch connects or disconnects a crankshaft of the engine and a crankshaft pulley including the clutch. The crankshaft pulley is connected to a generator pulley and an air conditioner compressor pulley via a belt.

Methods and systems are provided for controlling a vehicle engine to adjust exhaust warm-up strategy based on a vehicle network information. In one example, in response to an expected decrease in temperature of a catalyst of a vehicle below a threshold and an estimated duration thereof based on communications external from the vehicle, a method may include delaying catalyst heating actions, when the catalyst heating actions are determined to be unable to heat up the catalyst to threshold temperatures. However, the catalyst heating actions may be enabled when the catalyst heating actions are determined to be able to achieve the threshold temperature within the duration.

An override system of a vehicle includes a command module configured to: receive a concentration of a chemical in a driver's body measured using a chemical measurement device of the vehicle; and when the concentration of the chemical is greater than the predetermined concentration of the chemical, prevent movement of the vehicle. An override module is configured to, in response to receipt of user input indicative of an override request while the concentration of the chemical is greater than the predetermined concentration of the chemical, selectively generate a command to override the prevention of movement of the vehicle. The command module is further configured to, in response to the command, selectively allow movement of the vehicle.

A drive control system of a vehicle includes a vehicle speed module configured to determine whether the vehicle is moving and set a state of a signal based on the determination. A shift control module is configured to shift a transmission of the vehicle based on a signal from a range selector. Independently of the signal from the range selector, the shift control module is configured to selectively shift the transmission of the vehicle based on a signal from a combination park and ignition switch and the signal from the vehicle speed module. An ignition control module is configured to selectively shut down an engine of the vehicle based on the signal from the combination park and ignition switch and the signal from the vehicle speed module.

A fault diagnosis method for a bio-signal sensor for the vehicle includes measuring a first bio-signal through the bio-signal sensor in response to a seating detecting signal, measuring a second bio-signal through the bio-signal sensor in response to input through an on-board interface, and determining whether the bio-signal sensor may have malfunctioned according to whether the second bio-signal includes a signal deviating from a range set in response to the first bio-signal.

A vehicular control system for reducing shocks by inhibiting switching operation of a dog clutch when drive force cannot be assisted by an engine. A controller determines that an increase in the drive force by the engine is restricted. In a case that an increase in the drive force is not restricted when launching the vehicle, the controller establishes a first gear stage in the transmission to launch the vehicle, and shift to the second gear stage upon satisfaction of a predetermined condition during propulsion while increasing the drive force. In a case that an increase in the drive force is restricted when launching the vehicle, the controller establishes a second gear stage in the transmission to launch the vehicle.

A method for operating a hybrid vehicle having an internal combustion engine and an electrical machine for driving the hybrid vehicle is provided, where the internal combustion engine is supplied with fuel from a fuel tank, a fuel filling level of the fuel tank being determined using a fuel filling level sensor, wherein the electrical machine is supplied with electrical energy from an energy store, and the vehicle is configured to be driven in a purely electric mode, with the internal combustion engine switched off, using the electrical machine. In certain embodiments, the method includes establishing that the fuel filling level sensor indicates that a lower filling level has been reached or undershot, and, in response to this establishing, switching off the internal combustion engine and driving the vehicle in the purely electric mode, with the internal combustion engine switched off, using the electrical machine. Following said driving the vehicle in the purely electric mode of the vehicle, the method further includes switching on the internal combustion engine and driving the vehicle using the internal combustion engine in a special mode with the internal combustion engine switched on when one or more conditions for the special mode are satisfied.