What is this seat switch?
 

I'm doing some research on a PDC retrofit, and came across this unit for sale on EBAY. What is that second icon next to the heated seat switch? Cooled seats? I didnt think those were options on the e53


http://imgur.com/w51JATO.jpg

It is a cooled seat switch.

I wish we had cooling seats feature for summer

That is what's known as the SZM (Schalt Zentrum Mittekonsole), or Middle Console Switch Row. I believe there was indeed an option for cooled seats in late-model E53's.
:thumbup:

confusing. I need to look in the manual and see what each logo is for. For example, I have a Tire in brackets...does that mean I have TpMS? I didnt think I did. If I need to add PDC, do I need to find a switch that has the exact options I need, or are they modular?

Do you have the complete option list for your VIN? That would tell you if you have TPMS.

If you need the option list, PM your VIN and email, and I'll send you a PDF copy of it.

BTW, the functions in the SZM are NOT modular. There were several variants, each with different function options.

if your switch has the tire in exclamation point brackets you prob have TPMS. easy way to look at your valve stems, non-TPMS stems are visually different that TPMS sensors. You should also find a switch panel that has PDC button if you are looking to add it.

No I've got it in my email somewhere.

I'll look again. So, if I have heated seats, DSC, TPMS, Descent control, and then want to retrofit PDC, I need to find a console that has those exact buttons? at that point its just plug and play or does the harness get modified as well? I assume if the car is 'pre-wired' the harness for the center console switch should be fully loaded for those options?

I'm far from an expert on retro-fitting anything, but I do know you'll also need a PDC ECU, and maybe even an additional harness to the front and/or rear bumper.

even more odd...no sign of TPMS. Its possible my console got switched once before as well... who knows. Should that button do anything?


Type code FA13
Type X5 3.0I (USA)
Dev. series E53 ()
Line X
Body type GEFZG
Steering LL
Door count 5
Engine M54
Cubical capacity 3.00
Power 170
Transmision ALLR
Gearbox AUT
Colour TITANSILBER METALLIC (354)
Upholstery LEDER DAKOTA/SCHWARZ (LCSW)
Prod. date 2004-04-08

Order options
No. Description
1CA SELECTION COP RELEVANT VEHICLES
205 AUTOMATIC TRANSMISSION
248 STEERING WHEEL HEATING
321 EXTERIOR PARTS IN BODY COLOR
386 ROOF RAIL
402 PANORAMA GLASS ROOF
417 SUNBLINDS FOR REAR SIDE WINDOWS, MECH
437 FINE-WOOD TRIM
441 SMOKERS PACKAGE
442 CUPHOLDER
459 SEAT ADJUSTM., ELECTR. W. MEMORY
461 SEAT BACK ADJUSTMENT IN REAR, ELECTRIC
464 SKIBAG
494 SEAT HEATING F DRIVER/FRONT PASSENGER
502 HEADLIGHT WASHER SYSTEM
521 RAIN SENSOR
522 XENON LIGHT
524 ADAPTIVE HEADLIGHTS
533 AIR CONDITIONING FOR REAR
534 AUTOMATIC AIR CONDITIONING
555 ON-BOARD COMPUTER
639 COMPLETE PREP. CELLULAR PHONE USA/CDN
650 CD PLAYER
676 HIFI LOUDSPEAKER SYSTEM
761 INDIVIDUAL SUN PROTECTION GLAZING
785 WHITE DIRECTION INDICATOR LIGHTS
8SP COP CONTROL
926 SPARE WHEEL
945 CONSIDERATION OF PRICE DEPENDENCY

Series options
No. Description
2KB LT/ALY WHEELS V-SPOKE 130
249 MULTI-FUNCTION FOR STEERING WHEEL
302 ALARM SYSTEM
354 GREEN STRIPE WINDSCREEN
645 RADIO CONTROL US
661 RADIO BMW BUSINESS
692 CD CHANGER I-BUS PREPARATION
845 ACOUSTIC BELT WARNING
853 LANGUAGE VERSION ENGLISH
876 RADIO FREQUENCY 315 MHZ
992 NUMBER PLATE ATTACHEMENT MANAGEMENT