Renault laguna not starting when engine is hot

SOURCE: RENAULT LAGUNA.

check your linkages and shifter problem may be also in the gearbox

SOURCE: renault laguna warning light on dash board

i its the same light as the handbrake light check the brake luid level

SOURCE: tyre pressures for renault laguna

32 psi in the front and 30 psi in the back. if the tyre preasure monitoring is acting up even with the preasures ok. take the car to a renault garage to have them re initialised

SOURCE: renault laguna sports tourer 1.9 dci wont start

Try the relays under the bonnet fuse box 4 small black ones in a line, the first 2 from top cut of the fuel pump, and are a renowned cause of 85% of cranking without starting faults on the dci engine swap them over for the bottom 2 .
If it starts, buy 2 from Renault and fit
if the engine still fails to start the egr valve may be stuck closed starving the engine of air, its on the top of the engine at the air intake and has 3 bolts, remove it and clean it with carb cleaner then check its condition, if it appears ok, replace the cleaned one, if not you need a new one or the turbo will blow its seals and the engine will rev and burn on the engines own oil.
beyond this and your diy fixes are at an end without a obd2 code reader.

SOURCE: coding a key for a renault laguna

Renault Laguna II Key Remote Control Programming
LAGUNA II INFRA RED RESYNCHRONISING
1. Turn the Ignition OFF.
2. Press the central door locking button for more than 5 seconds. Note: the door should lock then unlock.
3. When this happens 15 seconds is allowed and the immobiliser warning light illuminates.
4. Point the 1st key at the receiver and press the button once, the doors should lock and unlock.
5. Point the 2nd key at the receiver and press the button once, the doors should lock and unlock.
6. Check the remote control unlocks and locks the doors.