Lexus LS600hL Owner's Manual page 843

The coolant level is satisfactory
4
if it is between the "F" and "L"
lines on the reservoir.
Reservoir
1
"F"
2
"L"
3
Add coolant if necessary.
5
(P. 752)
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and check for the multi-information display.
6
If the message does not disappear:
Stop the hybrid system and contact your Lexus dealer.
If the message is not displayed:
Have the vehicle inspected at the nearest Lexus dealer.
LS600hL_U(OM50D26U)
7-2. Steps to take in an emergency
843
7