Mercedes-Benz S400 car ECO function can not be used

A driving distance of about 75,000 km, equipped with 276 twin-turbo engine Mercedes-Benz S400 sedan. Customer Response: The vehicle ECO function can't be used.mb sd connect compact 4
     Fault diagnosis: after the car to start the car, no alarm on the instrument, connect the  MB SD C5 diagnostic computer for rapid testing, the control unit are no fault code. And the customer road test to verify the fault phenomenon, found that the ECO indicator on the instrument has been yellow, driving for a long time will not turn green.5054A
     Using the diagnostic computer into the engine control unit (ME) in the ECO state actual value, found that the actual value is normal, as shown in Figure 1.Foxwell NT510 Scanner

As the actual value shows normal, can not determine the fault range, try to engine control unit, transmission control unit, ESP control unit, before the SAM and after the SAM control unit are upgraded, the fault remains the same. Then after the throttle cleaning and 10min power failure, the fault still did not improve.OBD2
    First look at the ECO start / stop function How it works: When the vehicle is at rest, the ECO start / stop function automatically turns off the engine and starts the engine as soon as the driver wants to start. Turning the engine off when the vehicle is stationary can reduce fuel consumption emission. The engine control unit continually performs system diagnostics and evaluates the system status of the ECO start / stop function. All systems involved in the ECO start / stop function continually check their status and send this status to the powertrain control unit (N127) and send them to the ME control unit via the CAN C1 (drive system area network). If the functional requirements are met, the "ECO" symbol in the dashboard is green to inform the driver that the ECO start / stop function is ready.Autel PS100
    The function sequence of the engine auto stop is: If the following functional requirements are met, the ME control unit will shut down the engine. ECO start / stop function button lights up (that the system is fault-free and ECO start / stop function enabled); speed is 0; coolant temperature between 60 ~ 115 ℃; transmission oil temperature between 10 ~ 120 ℃ ; The engine speed is within the specified range; the range is at "D" or "flash"; the accelerator pedal is not operating; the running brake has been actuated until the vehicle is stopped; the brake booster has sufficient vacuum; the air suspension system , The auxiliary brake system and the distance control system do not perform the operation intervention function; the hood is closed: no collision signal; the steering wheel angular velocity is within the specified value range; the vehicle electrical system is in normal condition; the driver's door is closed and the driver's seat belt The temperature inside the car has been adjusted.http://www.x431tool.com/

OBDSTAR X300 DP VS XTOOL X100 PAD2 allegory table

In acclimation to accomplish you bright the aberration amid new accession OBDSTAR X300 DP and XTOOL X100 PAD2, actuality uobdii.com accord you a allegory table as below:
OBDSTAR X300 DP
XTOOL X100 PAD2
　

OBDSTAR X300 DP

XTOOL X-100 PAD 2
Operating System

Android 5.1

Android 4.4
CPU

Samsung Exynos4418 A9 industrial-grade processor.X300M

Rockchip civil-grade processor
Storage space

FLASH 16G

FLASH 16G
RAM

2G

1G
Battery

7400mAh

4000mAh
Resolution

1280*800

1024*768
Screen size

7 inch

8 inch
HDMI

Available

Available
Communication

Wire/Bluetooth

Only wire available
WIFI

Available

Available
Dimension

215*147*30

240*177*24
Shell

Three proofing and industrial-grade carapace with elastic coating

Civil-grade
One key upgrade

Available

Available
One key enter

Available

None
Database

Built-in database

Optional, pay extra
Technical support

Expert account team

　
Pincode inquiry

7*24 hours automated analysis is accessible for a lot of pin code

Manual inquiry
Fault diagnosis

All systems analysis are included

Only basal disgnosis for four system。OBDSTAR RFID
Conclusion:
OBDSTAR X300 DP is above to XTOOL X100 PAD 2 in abounding aspects, such as faster CPU, bigger RAM, continued abiding array and college resolution.
OBDSTAR X300 DP has Bluetooth and One Key Enter functions while XTOOL X100 PAD 2 cannot support.
For OBDSTAR X300 DP it’s no charge to analysis pin code, but XTOOL X100 PAD 2 charge analysis manually.OBDSTAR F102
And a lot of important is that XTOOL X100 PAD 2 can alone acquiesce you to analyze the basal four systems, but with OBDSTAR X300 DP you can analyze all systems!
OBDSTAR X300 DP abounding package
Immobilizer+ odometer adjustment+ EEPROM/PIC adapter+ OBDII+ ABS+ TPS+ SRS reset+ TPMS(low tire)reset+ Steering bend reset+ CVT learning/Value reset+ EPB+ Oil/service reset+ Array matching+ Analysis for Japanese and Korean serials (extra benefit function)
Article anatomy OBDSTAR Blog ： OBDSTAR X300 DP VS XTOOL X100 PAD2 allegory table

How to solve auto air conditioning abnormal

Automobile air conditioning abnormal sound phenomenon (Daewoo car as an example) OBD2

Failure phenomenon for the lack of cooling, open the engine cover, run air conditioning and refrigeration systems, air conditioning compressor abnormal sound, and sometimes accompanied by significant vibration.Launch X431

cause of issue

The circuit connection is loose, causing the clutch 4 to be jammed

Clutch line is quiet Launch X431 V 8

Clutch clearance is too large

The belt is loose

One of the two belts is broken at the same time

The compressor base is loose or worn Launch X431 V8

The compressor bracket is loose or

Compressor bearing is damaged

Tension wheel is damaged or lack of oil

Excessive refrigerant, causing liquid blow

Frozen oil too much, causing liquid hit

Compressor inside the internal (usually valve damage)

Maintenance method
Connect the circuit as required
Replace the clutch coil
Adjust the gap to 0.4 ~ 0.8mm Reactor bearing damage Replace the clutch bearing
Tension belt
Replace two belts
Tighten the compressor base or replace the base
Fasten or replace the compressor bracket
Replace the compressor alone
Replace the tension wheel assembly or bearing
Emissions or recycling of refrigerants or refilling
Release the frozen oil
Repair or replace the compressor.