RossTech makes the VAG-COM Diagnostic Cable.
You can get the setup with a USB connection, or with a Com Port connection for use with a laptop Computer.
Once you purchase the Cable, updates to the Diagnostic software are FREE.
Wiring issues, left side, may be your problem.
You could have a wire loose in one of your connectors.
Have you made any modifications to your Tail Lights, I.E. LED Tail Lights?
I just re-read your post, and it seems the Left Side is failing Diagnostics, and showing your Fault...
1.) you do not have 2 (two) Rear Fog Lights
2.) you can hay-bail a wire from the Driver's side Rear Fog Light to the "other" Rear Fog Light If you installed one.
3.) if you installed a second Rear Fog Light, get rid of it.
4.) The Rear Fog Light is for other cars behind you... it allows them to...
Ralph Thayer, Livonia, MI has always been good to me.
I've been good to them also.
I showed their Techs how cut the DSG Fluid change time in half, and I now get some preference in shop time, if I need it.
1st step is to get an Owner's Manual.
Follow all of the instructions on Miles, and Maintennance.
Then DO IT!
2nd step is normal inspection of the Tires, Brakes, and all of the fluid levels, and possible Fluid replacements, including ALL FILTERS.
3rd Step (which is contrary to most folks on...
Please have your car Scanned with a VAG-COM.
See this link, and input your ZIP CODE to find an owner of a VAG-COM HEX-CAN-USB/-COM cable.
You sound like I did back in the day...
Keep it up.
While you have the "fire" inside, track down Racor Biocide, Part Number ADT2116F.
Get it in a quart bottle.
Algae can contanimate your Fuel system.
One half of an ounce every 6 months can save you many headaches.
75 indicated on your Speedometer is 72 in real time.
What is your issue?
(Whoops, your 2010 Jetta may be quite different than a 2005.5/2006 in respect to the Speedometer)
You do need a portable GPS, and document what is what in regards to your actual speed.
3 blinks to 5, not going to happen...
You have Auto Window Roll-up in Rain (Rain Closing Windows).The First click on the Wiper Stalk.
This will service your Delayed wipers also.
2nd click and above will kill all other related features.