Section	Item or mode	What to check while parked	Observed state	Blue dot / circle / beam state	Notes / next check
Symptom classifier	Wrong or drifting blue dot	Does the blue dot sit on the wrong street, jump across blocks, or show a wide light-blue uncertainty circle?			
Symptom classifier	Gray or missing blue dot	Is the blue dot absent or gray, showing only the last location visited, or is the location button red with a ? icon?			
Symptom classifier	Wide or misoriented heading beam	Does the blue dot stay near the car while the directional cone is wide or points the wrong way?			
Symptom classifier	Route unloads or cancels	Does the active route disappear (for example, 10-15 seconds after starting) while the map continues to track position?			
Symptom classifier	Missing turn-by-turn voice	Does the blue dot follow the route accurately while spoken navigation prompts are silent?			
Symptom classifier	Full display freeze or disconnect	Does the entire Android Auto interface freeze or exit to the receiver menu?			
Permission & accuracy check	Location services master toggle	Settings > Location > Use location (confirm ON; red ? button in Maps indicates OFF)			
Permission & accuracy check	Google Maps app permission	Settings > Location > App location permissions > Maps (record current state: Allow all the time / Allow only while using the app / Ask every time / Don't allow)			
Permission & accuracy check	Use precise location	Confirm ON for Google Maps (OFF restricts the app to an approximate ~3 sq km area)			
Permission & accuracy check	Location Accuracy (Google Location Services)	Confirm whether Location Accuracy (combining GPS, Wi-Fi, cell towers, and device sensors) and Wi-Fi scanning are enabled			
Permission & accuracy check	Battery saver & Airplane mode	Confirm Battery saver mode is OFF (can cause jumping location) and Airplane mode is OFF with Mobile data / Wi-Fi active			
Permission & accuracy check	Competing navigation apps	Check whether Waze, another navigation app, or built-in vehicle navigation has an active route running			
Parked isolation matrix	Mode 1: Phone-only (open dashboard sightline)	USB unplugged, wireless projection disconnected; phone resting on upper dashboard under open outdoor sky			
Parked isolation matrix	Mode 2: Phone-only (pocket or closed cubby)	USB unplugged, wireless projection disconnected; phone placed in the pocket, bag, or covered console tray used while driving			
Parked isolation matrix	Mode 3: Direct wired USB (open dashboard sightline)	Wireless adapter unplugged; phone connected directly to car USB data port and placed on upper dashboard			
Parked isolation matrix	Mode 4: Wireless projection (native or adapter)	Phone connected wirelessly (or through wireless USB adapter) in normal driving position			
Support handoff	Phone model, Android version, Maps & Android Auto versions	Record exact device model and installed app versions			
Support handoff	Vehicle year/make/model & receiver software version	Record OEM trim or aftermarket receiver model and firmware			
Support handoff	Wireless adapter model, app & firmware (if used)	Record adapter details and whether vendor documentation mentions any GPS setting (Unknown / verify on the unit)			
Support handoff	Test environment	Record outdoor parking area vs parking garage, tall buildings, or underground obstruction			
Reminder	Blank = untested	Template for a parked user check; no pre-filled test results