My car's handbrake seems to be of little use. The car drives off even when it is applied until that beeping warns you to pull it free.
Does it suppose to be like this?
Yesterday I drove on the motorway from Islamabad to Lahore, with family. Max speed achieved was 165 km/h. The car drove well except the slight high-frequency vibration above 100 km/h. At 120 km/h the drone sound is loudest (in comparison, otherwise it is not much to be very noticeable), but below and above this speed it reduces.
The vibration was most felt at 120 km/h too. At lower speed its frequency reduces and at higher speed its frequency increases, both making the 'feel' to reduce. This is quite ironic because motorway speed limit is 120 km/h!
I feel brake vibration at all speeds above 50 km/h and bad feeling at lower (frictional sound of brake of early engagement in one front wheel when the brake pedal is gradually/partially pressed. Looks like I should check for jammed brakes as you say and application of silicone grease to brake holders/calipers.
The next time I am at the mechanic, I will get the rotors/discs checked. Replace them if they are too thin.
Do you recommend a brand to be used? Is Febi OK?
A couple of days ago, I got under the car myself with flash light and checked the flex discs. I feel they are fine. I attach some pictures of the under-carriage. Let me know if you find anything odd. Especially the oil-littered parts under the engine bay.
So @xulfiqar Sb, based on my descriptions and your technically rich suggestions, what steps do you recommend me to take to debug the problem? I am a little slow in learning about this car. According to my understanding, if the wheels/rims are OK and lugnuts proper, I should do the things in this order:
1. Center support bearing (where is it located?).
2. Rear axle
3. Driveshaft (I am not sure what is to be checked in this).
I think I will live with it until next transmission oil change (50,000 km or so).
Passenger window --> driver window --> car unlock, each stops working in order after reset. But I cannot recreate the problem.
In one of the threads I found your comments (copied below):
"What does she have to say about "malpractice" - I have had some really strange encounters with them - they made a bill of 3 control modules going bad, while the only problem was a faulty alternator which causes low voltage which caused the modules to shut down, I replaced the alty and interrogated the CAN BUS - it was working good."
Do you think, this fault can be with the alternator or the regulator?
How to verify this is the cause?