Super fantastic Mod Technical Supremo Nice Guy
AGAIN you have not read the original poster postsWell, this time he is wrong.
Let me show you an example as this will be my last post here.
By the way, I also own a car like that as Espace IV is built on Laguna II chassis and suspension, they share engines, gearboxes, fuel supply....
I never had my lamps calibrated but I can sure see the difference if something gets done on suspension.
By the book, any major job on fuel or air supply systems requires recalibration of Idle Air Control valve which is responsible for engine idle speed.
But that particular procedure can be neglected as the system will eventually recalibrate itself after few days of driving.
With auto headlight adjustment that is not the case.
If not touched, after 20 years every car with self adjustment system will have same setting as when it was released from factory. That system does not even have the possibility to "know" whether light beam is too low or too high. It will keep "zero" setting from factory forever.
One of the topics here was Laguna owner complaining about visible rubbing on engine mount (in fact front frame mount). That came from lower suspension after years of use, both Laguna II and Espace IV are notoriously known for that as they share all elements of suspension.
Owner fixed that by installing new shock absorbers and springs, meaning that the whole car was lower then new, it had lower ground clearance.
Let us assume that clearance is 2 cm lower and...
Owner has a set of winter tires 195/65/15 and set of summer tires 235/35/19
Summer tire is 648 mm high and winter tire is 635 mm high.
All together, lower clearance and winter setup means that beam of light is 33 mm lower then on a new car as bulb is also 33 mm lower, closer to the ground.
Low beam on a car should reach 80 meters.
With this setup driver of Laguna can expect about 5% shorter light on the road.
Sweet spot of light is about 40 m in front of the car, laguna driver will have this spot on 38 meters.
May not sound that bad but in a opposite scenario, low beam would hit into the eyes of the drivers form opposite direction and there is no way to lower it, driver has no means to lower the beam manually.
YOU have jumped in
DID YOU MISS THE PART where they are still dancing ( Or words to that effect )
SO THE HEAD LIGHT COMPUTER IS WORKING
nothing has changed, apart from he has lifted the front end.
SO on that without diagnostics ( For what its worth I use Clip often ) The only fault that would show is degrees down or up.
Which can be set with CLIP,.
BUT THAT IS WHEN you install a new. or donor levelling unit.
He has done neither
THE idea of this Forum is to save people money
IF there was a reason for him to have to go and get the headlights computer set at the Dealers then I would have kept out of this thread AND let him spend his money
And trust me after 45 years of working on customers cars I have never ever made them spend their money, unless needed