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Dear Colleagues,

This Administration Bulletin outlines the cautions and observations that should be followed when a vehicle is cleaned after off road use. These statements are also published in the Owner's Handbook for each vehicle:

THE EXTERIOR
Remove any heavy deposits of mud and dirt with a hose, before washing the vehicle.

Some high pressure cleaning systems are sufficiently powerful enough to penetrate suspension joints, door/window seals and damage trim and door locks. Never aim the water jet directly at any camera, the engine air intake, heater air intakes, body seals (doors, sunroof, windows, etc.) or at any components which may be damaged (lights, mirrors, exterior trim, suspension seals and gaiters, etc.).

Make sure that the pressure washer nozzle is always at a distance of more than 300 mm (12 inches) from any component of the vehicle.

Do not use a power wash system in the engine bay area.

Following cleaning of the vehicle's exterior (particularly with a pressure washer), it is recommended that the vehicle is taken for a short drive to dry out the brakes.

Substances which are corrosive, such as bird droppings, can damage the vehicle’s paintwork and should be removed as soon as possible.

Use only cleaning products approved by Jaguar Land Rover for use on vehicles

Do not apply polish to any unpainted areas of bumper mouldings. It will become ingrained in the textured finish.

UNDER BODY MAINTENANCE
Regularly flush the under body with clean water, and pay particular attention to areas where mud and debris collect.

If damage or corrosion are detected, have the vehicle checked by a Dealer/Authorised Repairer as soon as possible.

SENSORS AND CAMERAS
When washing the vehicle do not aim high pressure water jets directly at any of the sensors and cameras.

Do not use abrasive materials or hard/sharp objects to clean the sensors and cameras. Only use approved vehicle cleaning product(s).

Park assist and Parking aid sensors should be kept clean to maintain accuracy and performance.

If required, the cameras should be cleaned using a cloth moistened with a small amount of glass-cleaning product.

AFTER OFF-ROAD DRIVING
Make sure that the areas around air intakes and the front grille are clean and clear of debris. Pay particular attention to the lower grille, radiator, and intercoolers. Failure to do so, may cause the engine to overheat, leading to severe engine damage.

Make sure the vehicle's underside is cleaned as soon as possible, after driving off-road

Although not specific about clay or concrete (mind asks why Dunc is driving through concrete ) ...they do give general advice here.

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AFTER OFF-ROAD DRIVING
Make sure that the areas around air intakes and the front grille are clean and clear of debris. Pay particular attention to the lower grille, radiator, and intercoolers. Failure to do so, may cause the engine to overheat, leading to severe engine damage.