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04 SLK 200 出 BAS Defective and ESP Defective

用C mode 既時候,試過兩次出 BAS Defective and ESP Defective 既 malfunction ,但係熄車再著又冇左。

車房師傅話熄車著返冇左即係無事 … 係咪係㗎?
請問各位師兄有冇遇過?要整嘅話幾錢?

另外,C mode 油秏 $1.411 ,但係行 S Mode 油秏 $1.326
宜家入緊超級油,之前入普通油好似水咁,轉數上唔到,係唔係 engine 污糟?

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[attach]12889[/attach]

(1) 通常係個 Brake Light Switch 夠期 (在司機位腳倉附近),或任何一個 wheel sensor 污漬過多影響訊號所致。 如果經常出現,叫車房詳細檢查吓。
(2) 架車車齡十三年,耗油量高又冇乜力通常與O2 sensor,AirFlow Sensor夠期 及/或催化器蔽塞。上次幾時換過?
1990 W124 300CE M103 Manual
1993 Alfa 164 3.0 QV 24V Manual
1995 Jaguar X300 XJR 4.0 Supercharged Manual
2005 Jaguar X350 3.0 V6 LWB

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Hi , Martian 師兄,您好 ~~

( 1 ) So far 只出過兩次,好快又冇事 ... 暫時冇理會住。如果係 Brake Light Switch 問題,換個新的會否昂貴﹖
( 2 ) 架車易手買返黎,又真係吾知之前有冇換過。揸左四個月,油耗 $1.3 - 1.5 /km 左右,SLK黎講算吾算高 ﹖(大概70%高速 & 30%市區) 我以前揸架 1600cc 車齡8年都 $1.6 /km 所以吾知算吾算高。

係奇怪 S mode 慳油過 C mode ... 同埋,暫時 d malfunction 係響 C mode 先會出現,所以宜家係長開 S mode ( 咁我係開頭個零月用 S mode,之後,轉用 C mode 一個月左右發覺呢 d 問題,然後索性又用返 S mode ,我惗吾關駕駛習慣、或熟習架車既問題。)

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(1) Dead cheap brake light switch; costing below US$30.
(2) Not driven SLK before, so unable to comment.
Strange that S-mode is more economical than C-mode if 70% of the time is highway cruising.  
Modern motors have lots of electronic controls some of which will age and weaken in efficiency and the raw data, if inaccurate, will misinform the car's ECU and affect performance.  Also, if the car battery is weak, it may trigger many false alarm.  Find a trustworthy workshop and let them check for you.
Better conduct a routine check using Mercedes factory scanner to monitor efficiency of 02 sensors, Catalyst converter, etc.
1990 W124 300CE M103 Manual
1993 Alfa 164 3.0 QV 24V Manual
1995 Jaguar X300 XJR 4.0 Supercharged Manual
2005 Jaguar X350 3.0 V6 LWB

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