{"id":5244,"date":"2020-07-26T14:40:35","date_gmt":"2020-07-26T14:40:35","guid":{"rendered":"https:\/\/www.cnautotool.com\/blog\/?p=5244"},"modified":"2020-07-25T14:56:24","modified_gmt":"2020-07-25T14:56:24","slug":"fix-2007-ml350-ac-stop-working-with-autel-maxidiag-md808-pro","status":"publish","type":"post","link":"https:\/\/www.cnautotool.com\/blog\/fix-2007-ml350-ac-stop-working-with-autel-maxidiag-md808-pro\/","title":{"rendered":"Fix 2007 ML350 AC stop working with Autel MaxiDiag MD808 Pro"},"content":{"rendered":"

Car model and year:<\/strong> 2007 Mercedes ML350<\/p>\n

Symptom:<\/strong> AC just stopped working, but the fan went on high.<\/p>\n

What I tried to do:<\/strong>
\nWent to have it checked and was told that there was an obstruction on the system and Compressor no good. So I replaced the Compressor, Dryer, Expansion Valve, AC Pressure Sensor, Ambient Sensor, and replaced all seals. Did a 2-hour vacuum, let sit for 1 hour to see if had any leaks. But when I\u2019m trying to charge the system, after the 2nd 12 oz can, it doesn\u2019t want to accept any more refrigerant as it seems that the Compressor is not activating. Checked the voltage and there are only 4.2 volts. I replaced the Climate Control Switch w\/another used one to check, but still all the same.<\/p>\n

What should do next?<\/strong>
\nWhen there is a problem in the A\/C system, the A\/C Control Module will prevent the compressor to operate. The code\/s must be read to see what the problem is.<\/p>\n

After replacing the component, according to the code #, the code must be erased and then the A\/C compressor will then be operated.<\/p>\n

You must own your own Mercedes scanner for this problem and any other future problem that you might have.<\/p>\n

Autel MaxiDiag MD808 Pro<\/a> is a decent scanner for Benz car makes and any other cars when you need it.<\/p>\n

Full list of fault codes and events:<\/strong>
\n9001 Control unit N22 (AAC [KLA] control and operating unit) is defective.
\n9002 B10\/6 (Evaporator temperature sensor): Short circuit to ground
\n9003 B10\/6 (Evaporator temperature sensor): Open circuit
\n9006 Component A9 (AC compressor) has a Short circuit.
\n9007 Component A9 (AC compressor) has an Open circuit.
\n900A B12 (Refrigerant pressure sensor): Short circuit to ground
\n900B B12 (Refrigerant pressure sensor): Open circuit
\n900C B12 (Refrigerant pressure sensor): Supply voltage > 5.1 V
\n900D B12 (Refrigerant pressure sensor): Supply voltage < 4.9 V
\n9101 B10\/33 (Left center outlet temperature sensor): Short circuit to ground
\n9102 B10\/33 (Left center outlet temperature sensor): Open circuit
\n9103 B10\/34 (Right center outlet temperature sensor): Short circuit to ground
\n9104 B10\/34 (Right center outlet temperature sensor): Open circuit
\n9105 B10\/35 (Left footwell temperature sensor): Short circuit to ground
\n9106 B10\/35 (Left footwell temperature sensor): Open circuit
\n9107 B10\/36 (Right footwell temperature sensor): Short circuit to ground
\n9108 B10\/36 (Right footwell temperature sensor): Open circuit
\n9109 B10\/31 (Left side outlet temperature sensor): Short circuit to ground
\n910A B10\/31 (Left side outlet temperature sensor): Open circuit
\n910B B10\/32 (Right side outlet temperature sensor): Short circuit to ground
\n910C B10\/32 (Right side outlet temperature sensor): Open circuit
\n910D B10\/7 (Center rear interior temperature sensor): Short circuit to ground
\n910E B10\/7 (Center rear interior temperature sensor): Open circuit
\n9201 B14 (Ambient temperature display temperature sensor): Short circuit to ground<\/p>\n

9203 B32 (Sun sensor): Short circuit to ground
\n9204 B32 (Sun sensor): Open circuit
\n9207 Internal fault in component N22\/7b1 (In-car temperature sensor):
\n9303 M13 (Heating water circulation pump): Short circuit to ground
\n9304 M13 (Heating water circulation pump): Open circuit
\n930B R1 (rear window defroster) : Fault
\n9401 M2\/6 (Left blending air flap actuator): LIN bus communication error
\n9402 M2\/7 (Right blending air flap actuator): LIN bus communication error
\n9403 M2\/12 (Rear shutoff flap positioning motor): LIN bus communication error
\n9404 M16\/23 (Air flap actuator motor, left center vent): LIN bus communication error
\n9406 M2\/15 (Left and right footwell flaps actuator): LIN bus communication error
\n9408 M2\/16 (Left and right defroster flaps actuator): LIN bus communication error
\n9501 M2\/5 (Fresh and recirculated air flaps actuator): LIN bus communication error
\n9503 M2\/21 (Rear air distribution flap positioning motor): LIN bus communication error
\n9601 LIN bus error: Not within the valid voltage range
\n9602 LIN bus error: Ground potential outside the valid range
\n9606 Blower ( Front ): LIN bus communication error
\n9607 Booster blower: There is a short circuit to ground or the line for the readback voltage
\nhas an open circuit.
\n9608 Booster blower: There is an open circuit or the line for the readback voltage has a short
\ncircuit to ground.
\n960A LIN bus error: BUS communication not possible
\n9801 Button \u2018AUTO\u2019 sticks.
\n9803 Button \u2018Defrost mode (DEFROST)\u2019 sticks.
\n9804 Button \u2018Recirculated air\u2019 sticks.
\n9805 Button \u2018Rear window defroster\u2019 sticks.
\n9806 Button \u2018AC OFF\u2019 sticks.
\n9807 Button \u2018Switching off the rear air conditioning\u2019 sticks.
\n9808 Button \u2018OFF\u2019 sticks.
\n9809 Button \u2018Airflow up\u2019 sticks.
\n980A Button \u2018Air distribution via center outlets\u2019 sticks.
\n980B Button \u2018Air distribution in footwell\u2019 sticks.
\n980F Button \u2018Increase of blower output\u2019 sticks.
\n9810 Button \u2018Reducing the blower output\u2019 sticks.
\nEvent 900E Local undervoltage at circuit 30 (voltage < 9 V)
\nEvent 900F Local overvoltage at circuit 30 (voltage > 16 V)
\nEvent 9701 Fault in CAN communication with control unit N73 (EIS [EZS] control unit).
\nEvent 9702 Fault in CAN communication with control unit CGW.
\nEvent 9703 Fault in CAN communication with control unit N10 (Front SAM control unit).
\nEvent 9704 Fault in CAN communication with control unit A1 (Instrument cluster).
\nEvent 9705 Fault in CAN communication with control unit N72\/2 (RCP control module).<\/p>\n

Event 9706 Fault in CAN communication with control unit N10\/8 (Rear SAM control unit).
\nEvent 9707 Fault in CAN communication with control unit N69\/1 (Left front door control unit).
\nEvent 9708 Fault in CAN communication with control unit N69\/2 (Right front door control
\nunit).<\/p>\n","protected":false},"excerpt":{"rendered":"

Car model and year: 2007 Mercedes ML350 Symptom: AC just stopped working, but the fan went on high. What I tried to do: Went to have it checked and was told that there was an obstruction on the system and… Continue Reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":5246,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[220],"tags":[1432,1435,1434,1437,1440,1438,846,1436,1439,1433,847],"_links":{"self":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts\/5244"}],"collection":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/comments?post=5244"}],"version-history":[{"count":1,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts\/5244\/revisions"}],"predecessor-version":[{"id":5245,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/posts\/5244\/revisions\/5245"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/media\/5246"}],"wp:attachment":[{"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/media?parent=5244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/categories?post=5244"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cnautotool.com\/blog\/wp-json\/wp\/v2\/tags?post=5244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}