Aston Martin DBX

Aston Martin DBX 2021 Tyre Pressure Monitoring User Manual

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Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual

Tyre Pressure Monitoring System (TPMS)

Warning: Driving on a significantly under-inflated tyre causes the tyre to overheat and can lead to tyre failure. Over-inflation and under-inflation also reduces fuel efficiency and tyre tread life, and may affect the vehicle’s handling and stopping ability.

Warning: The TPMS is not a substitute for correct tyre maintenance, and it is the driver’s responsibility to maintain correct tyre pressures, even if under-inflation has not reached the level to set the TPMS tyre pressure indicator symbol to ON. A Tyre Pressure Monitoring System (TPMS) is installed as a safety feature. This system will display the tyre pressures for each tyre and provide warnings if pressure is below a specified pressure for each tyre.

Each tyre should be checked at least once every two weeks when cold, and inflated to the pressure recommended by the vehicle manufacturer (Refer to ’Wheel and Tyre Information’, page 11.15)or on the tyre pressure label. If your vehicle has tyres of a different size than the size indicated on the tyre pressure label, you should determine the proper tyre pressure for those tyres.

Tyre Pressure Display

The TPMS display is shown in the instrument cluster. Use the direction buttons on the right side of the steering wheel to navigate to Service and select Tyre Pressure. Tyre pressures will be displayed in the instrument cluster after the vehicle has been driven for a few minutes. If an under-inflated tyre is detected by the system, the TPMS symbol is solidly illuminated.

The message centre will also display one of the below messages:

  • Please Rectify Tyre Pressures: At least one tyre has too low a pressure. Tyre pressures should be checked and corrected when possible.
  • Check Tyre(s): At least one tyre has significantly low pressure. The tyre pressures must be checked and corrected as soon as possible.
  • Warning Tyre Defect: At least one tyre has lost pressure very suddenly. The vehicle should be stopped as safely as possible and the tyres checked.

Once the message has been acknowledged an image of the vehicle will be displayed in the message centre showing which tyre(s) have low or high air pressure and the current tyre pressure. When the tyre pressure indicator comes ON, stop and check your tyres as soon as possible, and inflate or deflate them to the correct pressure.

Warning: When a tyre pressure warning is detected, reduce the vehicle speed to a safe level. Stop in a safe and convenient place and inspect the tyre(s).
The tyre pressures may be displayed in the wrong positions for a short time if the wheels have been moved on the vehicle. After a few minutes of driving, the TPMS will calibrate and the tyre pressures are displayed in the correct positions.

TPMS Reset

All warning messages are erased and warning lamps go out when the TPMS is reset. The TPMS will use the new tyre pressure values as reference values.

To reset the TPMS tyre pressure values:

  1. Use the right scroll wheel on the steering wheel to navigate to Service.
  2. Navigate to Tyre Pressure.
  3. Select Use Current Pressures as New Reference Values.
  4. The TPMS will now reset. After a short period of driving, the system checks if the tyre pressures are within the specified range. The new tyre pressures are then used as the new reference values.

TPMS Malfunction Warning

If the TPMS malfunctions due to a system failure will flash for approximately one minute or tyre transmitter fault, and then remain lit. A malfunction of the tyre pressure monitor can take up to ten minutes to be shown. The TPMS warning lamp will go out when the fault has been resolved and after several minutes of driving.

A TPMS malfunction can be caused by:

  • A defective TPMS sensor.
  • Wheels and tyres installed that do not have TPMS sensors.
  • Unapproved items interfering with the TPMS.
  • TPMS system or software fault.
  1. If the system shows there is a TPMS fault, continue at a reduced speed of 30mph / 48 km/h maximum. Contact your Aston Martin Dealer.

Radio Equipment Directive

Hereby, Schrader Electronics Ltd., declares that this TPMS is in compliance with the essential requirements and other provisions of directive 1999/5/EC. The declaration of conformity may be consulted at


Detachable Towbar
Warning: The detachable towbar is heavy. Care should be taken when installing to prevent injury. Do not keep the tow bar loose in the luggage compartment when not in use. In the event of a crash, the tow bar could cause serious injury.

Caution: Only use an approved genuine Aston Martin towbar. This has been engineered to work correctly with your vehicle. Installation of an unapproved towbar can result in damage to the vehicle body or wiring, or may not be safe to pull the weights this vehicle has been rated for.

Caution: The tow bar should be regularly inspected and cleaned. The surface of the tow ball should be free of rust or other visible damage and grease should be cleaned off with a cloth.
The detachable towbar is an optional accessory available from your Aston Martin dealer. When installed, this provides a detachable “swan-neck” tow ball.

To fit the detachable towbar:

  1. Remove the cover from the towbar receiver.Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual 01
  2. Lift the tow bar into position.
    Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual 02The lock indicator should show red.

    • If the indicator does not show red, press the dial in and turn clockwise until red is shown.
  3.  Pull back on the tow bar to lock it into place. If the towbar is correctly engaged the indicator will show green.
    Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual 06If the indicator does not show green, remove the towbar and try again. If the indicator still does not show green, do not use the towbar. Contact your Aston Martin Dealer.
  4. Move the rubber cover aside and use the towbar key to lock the towbar.
    Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual 04
  5. Rotate the trailer electrics plug down.

Caution: Remove the tow bar when it is not in use and install the cover. This will help protect the tow bar and tow bar locking mechanism from environmental damage, dirt build up and corrosion.

To release the detachable towbar:

  1. Move the rubber cover aside.
  2. Unlock the towbar with the towbar key.
  3. Press the dial in and turn clockwise to release the towbar.
    Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual 06Carefully lower the towbar to remove it.
  4. Rotate the electrical connector back to it’s stored position.
  5. Install the cover to the towbar receiver.

Trailer Attachment Trailer types and weights

Warning: Only use the tow ball or hitch to attach a trailer to the vehicle. Other parts of the vehicle such as the tow eye are not designed to pull a trailer.

Warning: If the trailer weight or any weight related to towing a trailer is too high it can seriously affect the brake’s ability to slow or stop the vehicle safely. There is also a risk of failure to the engine or transmission. This can cause a crash which can lead to serious injury or death.

Warning: If different weight values are given between the tow vehicle and the trailer, always use the lowest of these values. Some trailers may be rated for higher weights than the tow vehicle is capable of towing.

Before a trailer is towed, you must make sure the below weights are all within their safe limits:

  • Trailer drawbar nose weight
  • Total trailer weight
  • The rear axle load of the tow vehicle
  • Gross Vehicle Weight (GVW)
  • Gross Train Weight (GTW)

These weights can be found in your vehicle documents, VIN plate and the identification plates for the trailer.
Maximum weight un-braked trailer 750 kg

Maximum tow weight  2700 kg
Nose weight for a laden vehicle1 120 kg

  1. Laden is described as five 75 kg (165 lb) occupants, 100 kg (220 lb) in the luggage compartment and no roof load.

Trailer Couple

  • When reversing the vehicle towards the trailer, make sure there is nobody between the trailer and the vehicle.
    The couple uncouple the trailer carefully. If you do not couple the trailer to the towing vehicle correctly, the trailer could become detached.

Breakaway Cable

Warning: Do not loop the breakaway cable around the tow ball. The cable could slide off and prevent emergency operation of the brakes in the event that a trailer becomes detached. An incorrectly connected breakaway cable can potentially cause serious injury or death.
When a braked trailer is towed, a breakaway cable is used to apply the trailer brakes in the event the trailer becomes detached. Make sure the breakaway cable is connected to the tow bar at the breakaway eyelet (A) when a braked trailer is attached.Aston Martin DBX 2021 Tyre Pressure Monitoring System (TPMS) User Manual 07

Power Connection

Caution: Only use trailer electrical equipment rated for a 12V supply. this will prevent damage to the electrical system The permanent power supply is switched off if the tow vehicle voltage is too low. It will also be switched off after six hours to protect the battery.

The vehicle trailer socket has a permanent power supply and a switched power supply from the ignition system. Each LED chain in the trailer lighting must be guaranteed a minimum current of 50 mA to provide a reliable indication of lamp failure. Trailers with a 7-pin connector: An adaptor or adaptor cable can be used to connect to the 13-pin socket on the ball coupling, which can be obtained from a specialist workshop.

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