Trace in value when buying a car
First time buying a car. I found the trade in value on this site for my Lexus, how does it work to use when purchasing a car on this site?

The RX 350 is the third generation of the RX series, a crossover between luxury sedans and SUVs, introduced by Lexus in the late 1990s. The original RXs were built off the Toyota Camry/Lexus ES platform. The crossover concept was a quick success, and the RX soon became the top seller for Lexus.
Throughout the decade, Lexus incrementally dropped larger engines into the RX. The first was a 220 horsepower 3.0 liter V-6 and the latest, at 3.5 liters, made 270 horsepower. The RX 350 had 47 more horses than the 2005 model. Like all the prior models, the new RX was available in two trims: a 4WD or a FWD. It's success can be attributed to the combination of car-like ride and fuel economy with some of the conveniences of an SUV.
Common complaints about the RX dealt with the SUV attributes which were absent. The RX was never touted as an off road performer. It's low ground clearance and car-like suspension makes trailblazing a little nerve racking. The RX did offer Lexus luxury, handling, and interior comfort. Factors like the unique body style and vehicle niche have attracted many satisfied buyers.
First time buying a car. I found the trade in value on this site for my Lexus, how does it work to use when purchasing a car on this site?
The two rear trunk auxiliary compartment catches are stuck. I think some small sand or dust particles may have jammed them. Can I remove them for service or free them up?
2007 Lexus RX 350 has check engine light and VSC light and smoking under the hood and oil
what does it mean when the VSC, Tracking light and electronic control lights come on?
I just changed plugs, coils, and pcv valve on my 2007 lexus rx350. Now the car starts but after 2 seconds shuts off. Won't stay started.
Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Driver knee airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Front side curtain airbags
Audio System
Antenna Type: diversity · Wireless headphones · 6 disc CD/DVD in-dash CD · Premium Brand: Mark Levinson · AM/FM radio · Rear audio: separate rear audio · Total Number of Speakers: 8 · 132 watts
Brakes
ABS: 4-wheel · Front brake diameter: 12.6 · Front brakes: ventilated disc · Rear brake diameter: 11.3 · Rear brakes: disc
Comfort Features
Armrests: rear center folding with storage · Center console trim: wood · Door trim: wood · Floor Mat Material: carpet · Floor Mats: front · Shift knob trim: wood · Steering wheel trim: leather
Convenience Features
Cargo area power outlet: 12V · Cargo cover: retractable · Center console: front console with storage · Cruise control: adaptive · Cupholders: front · Dimming rearview mirror: auto-dimming · Memorized settings: driver seat · Multi-function remote: keyless entry · One-touch windows: 4 · Power outlet(s): 115V · Reading lights: front · Steering wheel: tilt-adjustable · Steering wheel mounted controls: audio · Storage: door pockets · Vanity mirrors: dual illuminating
Driver Seat
Adjustable lumbar support: power · Power adjustments: 10
Drivetrain
Axle ratio: 3.29
Exterior Features
Rear trunk/liftgate: power operated
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 3
In Car Entertainment
Video monitor location: rear · Video monitor size: 9 · Video system: DVD player
Instrumentation
Warnings and reminders: low fuel level
Lights
Headlights: Auto on
Mirrors
Exterior mirrors: heated
Passenger Seat
Adjustable lumbar support: power · Power adjustments: 10
Rear Seats
Type: 40-20-40 split bench
Roof
Moonroof: remote operation
Safety
Camera system: rearview
Seatbelts
Rear center seatbelt: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front
Seats
Driver seat power adjustments: height · Front seat type: bucket · Heated: mulitlevel · Passenger seat power adjustments: height · Rear headrests: adjustable · Rear seat folding: split · Rear seat manual adjustments: reclining · Upholstery: cloth
Spare Tire
Mount Location: underbody · Size: full-size
Spare Wheel
Rim type: aluminum alloy
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: coil over shock · Rear Spring Type: coil springs · Rear Suspension Classification: independent · Rear Suspension Type: multi-link · Stabilizer bar(s): rear
Telematics
Navigation system: DVD navigation system w/voice activation · Phone wireless data link: Bluetooth
Tires
Type: all terrain
Tires and Rims
Spare tire size: full-size matching · Wheels: aluminum
Towing and Hauling
Trailer hitch: ready
Windows
Front wipers: intermittent · Liftgate window: fixed · Power windows: remote operation · Rear wiper: intermittent
Air Conditioning
Automatic climate control front air conditioning · Dual front air conditioning zones
Airbags
Dual front airbags · Driver knee airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Rear side curtain airbags
Audio System
Antenna Type: diversity · Wireless headphones · 6 disc CD/DVD in-dash CD · Premium Brand: Mark Levinson · AM/FM radio · Rear audio: separate rear audio · Total Number of Speakers: 11 · 132 watts
Brakes
ABS: 4-wheel · Front brake diameter: 12.6 · Front brakes: ventilated disc · Rear brake diameter: 11.3 · Rear brakes: disc
Comfort Features
Armrests: rear center folding with storage · Center console trim: wood · Door trim: wood · Floor Mat Material: carpet · Floor Mats: front · Shift knob trim: leather · Steering wheel trim: wood
Convenience Features
Cargo area power outlet: 12V · Cargo cover: retractable · Center console: front console with storage · Cruise control: adaptive · Cupholders: rear · Dimming rearview mirror: auto-dimming · Memorized settings: steering wheel · Multi-function remote: keyless entry · One-touch windows: 4 · Power outlet(s): 12V front · Reading lights: front · Steering wheel: power tilt and telescopic · Steering wheel mounted controls: audio · Storage: front seatback · Vanity mirrors: dual illuminating
Driver Seat
Adjustable lumbar support: power · Power adjustments: 10
Drivetrain
4WD Type: on demand · Axle ratio: 3.29 · Limited slip differential: center
Exterior Features
Rear trunk/liftgate: power operated
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 3
In Car Entertainment
Video monitor location: rear · Video monitor size: 9 · Video system: DVD player
Instrumentation
Warnings and reminders: low fuel level
Lights
Headlights: HID
Mirrors
Exterior mirrors: heated driver mirror
Passenger Seat
Adjustable lumbar support: power · Power adjustments: 10
Rear Seats
Type: 40-20-40 split bench
Roof
Moonroof: one-touch open/close
Safety
Camera system: rearview
Seatbelts
Rear center seatbelt: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front
Seats
Driver seat power adjustments: reclining · Front seat type: bucket · Heated: front seats · Passenger seat power adjustments: reclining · Rear headrests: adjustable · Rear seat folding: split · Rear seat manual adjustments: reclining · Upholstery: leather
Spare Tire
Mount Location: underbody · Size: full-size
Spare Wheel
Rim type: aluminum alloy
Suspension
Front Arm Type: lower control arms · Front Shock Type: gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: gas shock absorbers · Rear Spring Type: coil springs · Rear Suspension Classification: independent · Rear Suspension Type: multi-link · Stabilizer bar(s): front
Telematics
Navigation system: DVD navigation system w/voice activation · Phone wireless data link: Bluetooth
Tires
Type: all season
Tires and Rims
Spare tire size: full-size matching · Wheels: alloy
Towing and Hauling
Trailer hitch: ready
Windows
Front wipers: intermittent · Liftgate window: fixed · Power windows: remote operation · Rear wiper: intermittent