A very common fault on the 2001 - 2005 Laguna is the climate control illumination either does not work at all is is intermittent.
Sometimes you find a good smack gets it on only for it to fail again
The information I can send you is the fix for this
This will consist of an A4 text document with 11 steps and 2 full colour pages of step by step photo's to show what to do.
You will need a soldering iron and and screwdriver but that's about it
Whole repair takes about 1/2 hour
A new unit is hundreds of pounds from a dealer and totally unessersary
I can post for 34p or email free. Just add 34p to the final price if you want it by post.
Please send me your email address once completed
Thanks