___R. REMOVE CENTER CONSOLE 68-200 (C:\Program Files\MB 300 CDROM\Program\Chassis\68-200.pdf )
______1. REMOVE BOTH FLOOR MATS AND FOAM PARTS – skipped as not necessary
______2. REMOVE WOODEN COVER ON SHIFT LEVER 68-230 (C:\Program Files\MB 300 CDROM\Program\Chassis\68-230.pdf )
_________a. remove 2 screws in center console compartment and lift out (Pic035)
_________b. REMOVE SCREW AT REAR BASE OF WOODEN COVER (Pic036)
_________c. pry up and remove molding around shift lever cover (Pic037)
_________d. LIFT COVER FORM REAR TO FRONT. Doesn’t matter whether switches come with cover or not. However may be able to loosen cover by pushing switches down and out of cover (Pic038). Label as L/R then remove seat heater plugs if you have them (Pic039).
______3. renew bulb at shift lever (Pic040)
______4. REMOVE SWITCH FOR BLOWER – not on my car
______5. REMOVE SCREWS AND PULL OFF WOODEN PLATE COVERING CLIMATE CONTROL (Pic041 Pic042) Bag2
______6. remove 6 screws and pull out climate control (Pic043 Pic044). Label L/R then remove plugs for climate control (Pic045)
______7. Replace bulb in climate control unit. 83-635 (C:\Program Files\MB 300 CDROM\Program\Climate\83-635.pdf ). Use 5mm diameter conduit to remove old ones (Pic046). Labeled as 1.2W.
______8. PULL OFF SWITCH FOR BACK WINDOW HEATER. Actually pull off rightmost switch face (Pic047).
______9. release carrier first (Pic048 - switch but not socket should actually be out unlike this picture) then push switch carrier in forward and to right and pull left out (Pic049)
______10. UNSCREW 2 NUTS FROM CENTER CONSOLE TO INSTRUMENT PANEL (DASHBOARD) (Pic050) Bag2
______11. REMOVE RADIO 82-7502 (C:\Program Files\MB 300 CDROM\Program\Chassis\82-7502.pdf )
_________a. remove ashtray (Pic051)
_________b. remove ashtray carrier and detach plug for ashtray light (Pic052). Renew bulb
_________c. PUSH DOWN 2 CLAMPING LEVERS (Pic053)
_________d. INSERT REMOVAL PLATES – not functional in carrier used in this car
_________e. WITHDRAW RADIO and pull 5 plugs (Pic054)
______12. PUSH BACK DETENT AND TAKE SWITCH PLATE OUT OF HOLDER. This just means free window switch plate (Pic055)
______13. UNSCREW REAR FASTENING SCREW (Pic056)
______14. remove 2 screws just to rear of shift lever (Pic057)
______15. UNSCREW FRONT LEFT AND RIGHT FASTENING SCREWS – not on this car
______16. DISENGAGE LOWER HOLDING LINK OF LATERAL TUNNEL LINING – not on this car
______17. DISENGAGE UPPER HOLDING LINK OF LATERAL TUNNEL LINING – not on this car
______18. REMOVE LATERAL LINING TOWARDS REAR (Pic058)
___S. REMOVE AIRDUCTS FOR REAR COMPARTMENT VENTILATION FROM BOX. Remove screw on R (Pic105). Rotate R airduct out of R rear duct (thumb in Pic106). Pull down from BOX. Repeat on L with more wiggling than on R.
___T. REMOVE HORIZONTAL CROSSMEMBER AND VERTICAL BRACE. First remove temperature sensor wire B10/2 or B10/3 (below) as it gets tension when brace comes off. Brace releases with 2 screws (Pic107 Pic108). Brace left hanging in car with wires attached. To remove crossmember, take off 4 screws on L (finger pointing in Pic107). Remove bracket on L (Pic109) by first rotating ignition switch (see instructions 2 steps ahead). Remove 2 nuts on R and pull aspirator blower for interior air temperature sensor from bracket (Pic110). Remove brake cable to shift lever cable (Pic111) and pull out crossmember.
___U. REMOVE 2 BOLTS AND BRACKET HOLDING BOTTOM OF BOX (Pic112) as well as connector next to it (Pic113) Bag6
___V. PULL OUT IGNITION LOCK BY UNLOCKING WITH KEY (POSITION 1), TURNING SCREW (Pic114), PRESSING IN RETAINING PIN (Pic115), and rotating. TO GET IT OUT REALLY NEED TO BEND IT DOWN AND TOWARD REAR OF CAR (Pic116).
___W. REMOVE HEAT EXCHANGER TEMPERATURE SENSOR CONNECTOR ON BOX B10/2 AND B10/3. I only found one and part of it broke off (Pic117). REMOVE CONNECTOR TO EVAPORATOR TEMPERATURE SENSOR B10/6 (Pic118). Remove wiring for B10/6 from bracket by elevating clip (Pic119) and pulling out.
___X. REMOVE VACUUM LINES, 2 POLE CONNECTOR, AND SWITCHOVER VALVE Y13/1. Skipped. Just remove vacuum line coming from engine compartment (Pic120) and release from 2 clips on back of BOX. Also pull control plug to switchover valve (Pic121).
___Y. remove bracket to left and above BOX holding various electronics (perhaps including seatbelt warning light relay - Pic122)
___Z. REMOVE LEFT AND RIGHT AIR DUCTS FOR NOZZLES (Pic122). Left must be pulled out a fair bit so that expansion valve on evaporator has clearance during removal.
___AA. PULL OUTSIDE AIR TEMPERATURE SENSOR B10/5 FROM HOLDER (Pic124)
___BB. Remove cable tie attaching wires to lower left of BOX near lower left bolt (Pic125) and place new cable tie. Reattach when reinstalling.
___CC. remove clips and drains for evaporator from both sides of BOX at bottom (Pic126) and discard. Clean old tubing out of hole once evaporator is off and replace on both sides with with Ύ” ID x 5” length tubing from Lowes. Clips not used Stretched out one end of tube before putting on with vicegrips.

(continued in next post)

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1991 300TE 4matic 205k miles (bought 2000)
1992 300TE 4matic 200k miles (bought 2000)
1992 300TE 4matic 150k miles (bought 2004)