First of all, I like my Renegade a lot. With studded winter tires the grip and traction is incredible. I have never driven anything that can compare. The comfort is also very good. And it's a fun car to drive.
Now over to the not so good. Jeep must have done a really bad job testing the car in cold climate. When the outside temperature went down to around -15 °C (5 °F) and lower, the car started to show all kinds of fault/alerts like Serv 4WD, Check parking or electronic brake, Stop/start unavailable and Check Engine. In addition, after driving for 40 minutes at moderate speeds and then leaving the car for 24 hours in -25 °C (-13 °F) , the battery didn’t have enough charge to start the car. I checked the battery and it is only 72 Ah which in my opinion is insufficient for climates where the temperature can get down to -30 °C. After a night of charging the battery and a couple of hours with the block heater on, the car started. When the outside temperature went up warmer than -15 °C (5 °F), the messages disappeared. When Check Engine is showing, the car is only front wheel drive.
The most stupid or laughable effect of these faults was the following: The car said Stop/start unavailable and the system could not be turned on with the button. When I came to work I drove slowly into my parking space and braked the car to a stop half way into the space. Then the car decided to activate the stop/start system and automatically stopped the engine. The problem was that the system was apparently still unavailable so when I released the brake pedal the car wouldn’t start automatically. I had to switch off the ignition and then on again to start the car and drive it the last meter into the parking space.
I really hope that Jeep has software-updates to fix these issues, but I fear that these low temperature problems are unknown to Jeep and that my car will not be fixed this winter…
Anyone else experiencing problems in cold temperatures?
To solve your problems I recommend you to do two things:
(1) Go to a Jeep dealership and ask them to install you all the new Jeep software updates issued by Jeep on the "CUSTOMER SATISFACTION NOTIFICATION R74". I did it, and I noticed that the "warning lights" disappeared and that the battery charging management also was reprogrammed (I have the "Jeep skils" app on the Uconnect that shows me the battery Voltage, Amperage being charged/drawn and the Batt % off charge).
"CUSTOMER SATISFACTION NOTIFICATION R74" states:
We are recommending the following improvements be performed on certain 2015 and 2016 model year Jeep Renegade vehicles.
The problem is...
The modules listed below on your vehicle may require updated software.
Engine Control Module (ECM)Automatic Climate Module (ACM)
Instrument Panel Cluster (IPC)
Radio Frequency Hub Module (RFHM)
Heating and Climate Control System (HVAC)
Driver Assistant System Module (DASM)
Drivetrain Control Module (DTCM)
VP2 Infotainment Devise
(2) For extreme weather conditions (cold) I also recomend to replace the battery by a VARTA Silver Dynamic AGM570901076. It has exactly the same size as the original, but 760A cold start. It also charges faster (important if you drive short trips.
Finally, the stop&start system is (and shall be) automatically disengaged if some conditions are met like low battery charge, engine cooling fluid below 60ºC, Cabin temperature much different from the one selected on the Air conditioning, etc. This is the same to other cars with Stop&start.