What does the red diagram of a car with all except one back wheel showing mean on dashboard Renault Laguna?

The red diagram of a car with all except one back wheel showing on the dashboard of a Renault Laguna typically indicates a problem with the tire pressure monitoring system (TPMS). This system uses sensors to monitor the air pressure in each tire, and if the pressure in one or more tires drops below a certain level, the TPMS warning light will illuminate on the dashboard.

When you see this warning light, you should check the tire pressure in all four tires and inflate any tires that are low. If the warning light does not go off after you have inflated the tires, you should have the TPMS system checked by a qualified mechanic.

Here are some additional things to keep in mind about the TPMS warning light:

* The TPMS warning light may also illuminate if there is a problem with the TPMS sensors themselves.

* The TPMS warning light may illuminate if you are driving on a spare tire.

* The TPMS warning light may illuminate if you are driving in extreme weather conditions.

If you have any questions about the TPMS warning light, you should consult your vehicle owner's manual or a qualified mechanic.