Aston Martin DBX 2021 Driving with a Trailer User Manual
Driving with a Trailer
Make sure that you are familiar with any additional driving license and legal requirements for towing in the country or state you intend to drive in.
Caution:
Incorrect use of a trailer can cause damage to your vehicle and result in repairs not covered by the vehicle warranty. When a vehicle is driven with a trailer the handling characteristics will be changed and you may need to adapt your driving style. Braking distance will also be increased, so you should always maintain a safe distance from other road users. Many countries also legislate different road speed limits when a trailer is towed. Adjust your speed to the road and weather conditions and do not exceed the maximum speed for a towing vehicle.
Temperature Warnings
Drivetrain components such as the engine, transmission and differentials will potentially be subject to increased temperatures when towing and made more apparent when towing on inclines. On a long incline, it may be necessary to reduce your speed to prevent the drivetrain components from overheating. Avoid driving with a trailer on inclines of more than 12%.
Stop/Start
The Stop/Start function switches the engine off when the vehicle comes to a stop to reduce fuel consumption and emissions.
Setting On or Off
Stop/Start is only available when drive mode is set to GT or Sport.
Stop/Start is controlled by the START/STOP button (A) on the lower console. When the system is off 
will be shown in the instrument cluster.
Engine Stop Conditions
With Stop/Start active, the engine will switch off when the vehicle is completely stopped, the transmission is in either D (Drive) or N (Neutral) and if the following conditions are met:
- The vehicle battery condition is suitable.
- The bonnet is closed.
- The driver’s door is closed.
- The driver’s seatbelt is fastened.
- The engine is at operating temperate.
- The outside temperature is within a suitable range.
- The vehicle’s climate temperature has reached the set temperature.
- The engine has been on for a minimum of 20 seconds. If any of the above conditions are not met when the engine attempts a stop/start event, the
symbol will be shown, otherwise 
will be shown when the system is active. - When the engine is switched off, all the remaining vehicle systems will continue to operate (navigation, media etc.).
Engine Start Conditions
The engine will automatically start again when:
- The engine has been switched off for 3 minutes.
- The engine goes above or below the operating temperature.
- The throttle pedal is pressed.
- The brake pedal is released.
- The steering wheel is turned.
- The STOP/START button has been pressed on the center stack.
- R (Reverse) is selected.
- The driver’s seatbelt is unfastened.
- The driver’s door is opened.
- The vehicle begins to roll.
- The battery condition would prevent a restart.
- The vehicle interior has dropped below or increased above the temperature set by the climate control system.
Emergency Stops
If the vehicle detects a level of braking that it determines to be an emergency stop, the stop/start will prevent the engine switching off.
Gasoline Particulate Filter (GPF)
The GPF system is used to reduce particulate emissions from the exhaust system. Particulates are stored in the exhaust system and are burned off as the filter is filled in an event called regeneration, which happens automatically as the vehicle is driven. If the vehicle is only driven on short journeys or in cold environments where more particulates are generated during cold starts, a warning may be shown in the instrument cluster.
Stage 1 Warning
Regeneration should be completed in GT mode and without cruise control active. When the stage 1 warning is shown, the vehicle should be driven on a motorway or similar road where a constant and steady speed can be held for several minutes. As the vehicle is driven, the engine calibration is altered to increase the temperature in the exhaust and the filter element until it is high enough to burn the soot. After several minutes of driving, the throttle pedal should be released for a few seconds at a time (or when leaving a motorway junction). This will then enable the soot to be burned from the exhaust system. Repeat this procedure until the warning symbol is no longer shown in the instrument cluster. If, after a period of driving and doing the above instructions, the warning lamp is still shown, contact your Aston Martin Dealer for assistance.
Stage 2 Warning
If the stage 2 warning is shown, there is a fault with the GPF system which means the vehicle cannot perform a regeneration. This can be a fault with the GPF electrical or pressure systems, or the filter itself, or that the accumulated particulate mass is too high, and cannot be safely burned. If this warning symbol is shown, contact your Aston Martin Dealer as soon as possible.
Park Assist Systems
Warning:
The park assist systems are for aid only. It is the driver’s responsibility to be aware of their surroundings when parking or reversing. When the tow bar socket is used for tow bar mounted items, such as an accessory bike rack or trailer, the rear parking sensors and Active Park Assist systems will be deactivated.
Park Distance Control
Caution:
It is always the driver’s responsibility to detect obstacles and estimate the vehicle’s distance from them. Some overhanging objects, barriers, thin obstructions or painted surfaces which could possibly cause damage to the vehicle may not be detected by the system. Always be aware of your surroundings when using the park assist systems.
Caution:
Do not clean the sensors with abrasive or sharp objects. This can damage the sensors. For reliable operation, the sensors in the front and rear bumpers should be kept free from ice, frost and grime. If a high-pressure spray is used to clean the vehicle, the sensors should only be sprayed briefly and not from a distance of less than 200 mm. The Park Distance Control (PDC) system will give a series of warning tones if objects are detected within range of the vehicle.
Activation
PDC will activate automatically at ignition on and when D (Drive), R (Reverse) or N (Neutral) is selected. The sensors activated depend on which gear is selected.
(D) Drive Front sensors only.(R) Reverse, (N) Neutral Front and rear sensors.(P) Park Sensors off.
Deactivation
PDC will deactivate when the vehicle speed exceeds 11 mph (18 km/h). The system is reactivated automatically when the vehicle speed is lower. To manually deactivate PDC press 
The indicator LED will be set to off to show the system is deactivated.
Operation
Caution: In heavy rain or similar adverse conditions, the PDC sensors may not always be able to accurately measure distance to close objects. A fully laden vehicle or irregular obstacles may also cause inaccurate measurements. Take extra care in these circumstances.
If an obstacle is detected to the front or rear of the vehicle, a series of warning tones will be heard from the front or rear speaker respectively. The frequency of the warning tones increase as the vehicle approaches the obstacle. The beep becomes a continuous tone when an obstacle is detected at or within approximately 0.3 m (1 f t) from the front or 1 m (3.3 f t) from the rear of the vehicle. If the Warn Early function is set to on (Refer to ’Audio’, page 10.6), then the front and rear sensor detections begins at 1 m (3.3 f t). If an ultrasonic frequency using the same frequency band as the sensors is detected, the PDC system can give spurious warning tones. The PDC system uses inner and outer sensors. When maneuvering forward into a garage, the front outer sensors will cease detection if they detect a stationary or receding object for three seconds or more. This allows detection directly in front or behind the vehicle in this type of maneuver. The LED will flash if a fault is detected in the system and a single three second tone will be heard (only once per ignition cycle). The system is automatically disabled when a fault is detected.
Aston Martin 2023 Top Accessories
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Reference Links
View Full User Guide: Aston Martin DBX 2021 User Manual
Download Manuals: https://www.astonmartin.com/en/owners/owners-guides
