Ram 2500 and 3500 有过Recall，赶脚看看你的在不在里面；如果在赶脚打电话给Dealer
The Details
Vehicles recalled: They are mostly heavy-duty trucks: Certain 2010-2017 Ram 2500 and 3500 pickups; 2011-2017 Ram 3500, 4500 and 5500 chassis cabs; 2016-2017 Ram 3500 chassis cabs with a Gross Vehicle Weight Rating (GVWR) of less than 10,000 lbs. Some 2009-2017 Ram 1500 pickups are also included in the campaign. However, all 2017 model-year trucks built after Dec. 31, 2016, are excluded from this recall.
The problem: According to the FCA statement, “a review of field data led to the discovery that Brake Transmission Shift Interlock (BTSI) may not function properly if subject to specific high-temperature conditions for prolonged periods.” FCA said that if the BTSI becomes disabled, a vehicle’s shifter may be moved out of Park even if the brake pedal is not depressed, or even if there is no key in the ignition. If the parking brake hasn’t been set, the truck could inadvertantly move, the automaker says.
The fix: Ram says in the statement it will restore the shift interlock function. The statement urges customers to use their parking brakes, as recommended, in the interim.
How to contact the manufacturer: FCA says it will notify owners, but they can also call (866)-220-6747.
买了一台2010年RAM3500, 6.7 Cummins diesel，4x4, auto transmission.
问题：
行驶中没有任何动作，车自动换到R档，有稍强的顿挫感，发动机熄火。靠边停车，钥匙开关几次，可以拨动换挡杆回到P档，然后启动行驶回复正常。故障发生在100公里左右时速，大概1-200公里左右发生一次，巡航和非巡航状态都发生过。
类似的问题是行驶中自动换到手动档，车不熄火，此时还可以拨动挡杆恢复到D。
变速箱没有噪音，平时换挡正常，没有打滑，变速箱油颜色气味正常，读码没见到变速箱问题（有一些排放方面的问题）。
去一家本地变速箱修理厂检查，没找到原因。老板说修了40年车，从来没见过这种故障。电话问了几家其它店，也说没遇到过。
感觉不像是机械方面的问题，猜测是电子或控制系统的问题，比如solenoid, wire, cluster, PCM等。
哪位了解可能是什么原因？有什么建议？多谢了！
这个看着象控制问题，换挡是拉线的还是电子的?
但愿不是遗留症。
The Details
Vehicles recalled: They are mostly heavy-duty trucks: Certain 2010-2017 Ram 2500 and 3500 pickups; 2011-2017 Ram 3500, 4500 and 5500 chassis cabs; 2016-2017 Ram 3500 chassis cabs with a Gross Vehicle Weight Rating (GVWR) of less than 10,000 lbs. Some 2009-2017 Ram 1500 pickups are also included in the campaign. However, all 2017 model-year trucks built after Dec. 31, 2016, are excluded from this recall.
The problem: According to the FCA statement, “a review of field data led to the discovery that Brake Transmission Shift Interlock (BTSI) may not function properly if subject to specific high-temperature conditions for prolonged periods.” FCA said that if the BTSI becomes disabled, a vehicle’s shifter may be moved out of Park even if the brake pedal is not depressed, or even if there is no key in the ignition. If the parking brake hasn’t been set, the truck could inadvertantly move, the automaker says.
The fix: Ram says in the statement it will restore the shift interlock function. The statement urges customers to use their parking brakes, as recommended, in the interim.
How to contact the manufacturer: FCA says it will notify owners, but they can also call (866)-220-6747.
比如车漆，座套之类的。不过我只是要一辆能干活的车，所以也不在乎了。但这个换挡的问题可没法忽略。
从现象分析，车没有真的进入倒挡，而是显示为倒挡。感觉不太像是机械方面的问题。
这个照片里显示温度不正常，应该是故障后导致的。
都是shifter自己切换。只不过他这个是刹车和换挡之间的联动发生了问题。
transmission太复杂了，我自己搞不定，问了会修车的朋友，以及本地好几家专门做变速箱维修的店，都没什么结果。在RAM的英文论坛上也问了，没消息。 有什么在线答疑之类的吗？收费的也行。
变速箱应该没有真的换到倒挡，否则不会是简单的一个顿挫。更可能是传感器或控制器出现了错误的信号，认为进入了倒挡，所以强制熄火。
另外一个线索是问题只发生在100km/hr左右的时候，速度再高再低都没发生过，那和特定挡位有关系？
还有就是他自动切换为手动档，然后还能拨动挡杆换回来。不知道后面是什么原理。
读码没发现和transmission相关的问题。有没有办法读到运行中的状态，有助于诊断？我有一个小的OBD2蓝牙接口，原来用Torque读过。
我们本地的修理厂已经问了好几家，暂时无解。有没有办法远程求助高手？
I think it also slips down gear. Just that you do not feel it with that big million mile diesel. Too bad, that transmission is not million miles,
Do you remember if the truck engine RPM would go up when you are cruising at 100kM / hour?
Tranmission fluid looks good? I bet it was recently changed, right before you purchased it.
Good Luck
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