Yeah for the 2014 Model Year you need to see the the sticker, it is a $600 option called:
P58 P58 Range Package: Electrically Heated W $600 597 : Heated Windshield
P58 : RANGE PACKAGE
IF YOU ARE LOOKING AT A 2015 Model Year car the "Range Package" is included. OR ask for a picture of the dashboard (center console buttons) of the actual car you are considering and look for the Range Charge Button.
Here is my sticker from my 2014: (VIN removed, and sorry it formatted so weird
MSRP 2014 B ED
B ED
761 Polar Silver Metallic
201 Black Leather
***** STANDARD ACCESSORIES ***** BID Battery ID
B35 Level 1 120V Charging Cable B53 Pedestrian Warning Sound K15 Engine Service Interval
R02 All Season Tires
R66 Extended Mobility Tires
U10 Weight Sensing System - WSS
U12 Floormats
U22 4-Way Lumbar Support
U25 Mercedes-Benz Illuminated Door Sill Pane U35 12V Power Plug/Cargo Area
U59 Seat Comfort Package
U62 Light & Sight Package
V57 Luggage Cover
240 Outside Temperature Indicator
242 Power Passenger Seat w/Memory
25R 17" 10-Spoke Wheels
258 Collision Prevention Assist
264 License Plate Holder
275 Power Front Seats w/ Driver Memory
280 Leather Str Wheel/Shift Knob
286 Parcel Nets
290 Window Air Bag
293. 293 Rear Side Airbags
294. 294 Driver Kneebag
30P Storage Package
301 Ashtray
310 Twin Cupholders
345 Rain Sensor Wipers
348 mbrace2 - w.trial period by Hughes Telem 400 Rear Center Arm Rest
440 Cruise Control w/o Speed Limiter
442 Multi Function Steering Wheel
461 Instrument Cluster w/ Mileage reading En 475 Tire-Pressure Monitoring System
485 Comfort Suspension
494 Emission Equipment
VIN : XXXXXX PO : XXXXX
$41,450 $720
Dealer Information
Vehicle Information
MERCEDES-BENZ OF NANUET 99 ROUTE 304
NANUET,NY 10954
20141 B ED Region :Northeast VPC :Baltimore
Code
Description
Price
538 Attention Assist
543 Double Sun Visors
551 Anti-Theft Alarm System
58U Fabric Roof Liner - Grey
581 3-Zone Automatic Climate Control 634 First Aid Kit
636 Collective Code
668 Sea Packing & Dispatch
723 Cargo Cover
763 Remote Key w/Panic Button
805 2014.5 Registration Year
900 Exterior Chrome Trim
932 Storage Box
939 Storage Box
942 Cargo Organizer System
986 VIN# Code
989 VIN Code
***** OPTIONAL ACCESSORIES *****
B50 Radar Based Recuperation System with Pad $350 P01 P01 Premium Package: Garage Door Opener, $2,980
873 : Heated Front Seats
810 : harman/kardon Sound System w/Dolby 5.1 614 : Bi-Xenon Headlamps
536 : SIRIUS Satellite Radio
518 : iPod/MP3 Media Interface
249 : Driver's Side & Interior Auto-Dimming Mi 232 : Garage Door Opener
049 : iPod/MP3 Media Interface Cable
P58 P58 Range Package: Electrically Heated W $600 597 : Heated Windshield
P58 : RANGE PACKAGE
234. 234 Blind Spot Assist $550
235. 235 PARKTRONIC (with Advanced Parking Assist $970
318 318 Interior Package: Leather Upholstery $1,690
880 : IR Remote Open/Close Function on Driver
P34 : Exclusive Package
320 320 Multimedia Package: COMAND® System w $2,370
527 : COMAND w/Navigation and Voice Control 502 : Navigation Map updates included for 3 ye 218 : Rearview Camera
U71 : DVD Player/USA/Canada
736 Black Ash Wood Trim $325
SUBTOTAL $52,005 DESTINATION & DELIVERY $925 TOTAL $52,930