Tony Ainsworth
 

I have S280 not sold in US but similar to S320 Despite all checks my air conditioner is only blowing hot air onto the drivers window No air through grill hot or cold Cannot get any cold air Gas is good Blower is working fine I do get cool air in rear of car vent Any help greatly appreciated Tony Ainsworth

Is the airflow controlled with vacuum using vacuum pods like the W126 models? I am not familiar with the W140 body style but I would start there since you do not have proper airflow anywhere. Or you can also look for any loose or broken vacuum lines.