JEEP GRAND CHEROKEE 2.7 CRD GEAR SELECTOR SHIFTER PCB Replaces 52104468

Description

Upgraded gear selector shifter board for Jeep Grand Cherokee 2.7 CRD
The purpose of transmission shifter module is to tell to the car gearbox in which position the gear levers are. Transmission shifter module PCB (Printed Circuit Board) is located under the gear lever rods where it uses sensors to know the exact position of the rods. When the board breaks down then manually you can switch the gears, but electronically the gear remains in the position it was before the shifter board broke, like for example it stays in Parking position. Then the car realizes that something is wrong and switches the transmission into limp mode and shows fault code P0702 in dash. Within Limp Mode your car only drives with second and reverse gear, switching gear lever causes car to jump. Since you can only drive with 2nd gear, maximum driving speed is about 60 km/h. Also MIL light will light up in dashboard.
P0702 code ALWAYS occurs in Engine Control Module with Jeep gearbox electrical problems. P0702 is generic fault code stored in Engine Control Unit and it means that transmission has some electrical fault. There can be other faulty electrical items in transmission with code P0702, but broken shifter board is the most common. Best way to know what exactly is broken is to read out transmission and engine fault codes. Check at
https://jeepswj.com/software/
about Jeep Grand Cherokee diagnostic tool.
There is no need to change the whole shifter lever assembly in your Jeep Grand Cherokee. It is enough if you change the faulty transmission shifter electronics board and your car will drive again.
We made a new and improved version of the Jeep Grand Cherokee transmission shifter PCB module. Our new board is made to last – we removed all the design errors, plated all the PCB pads with gold, removed oxidation problems, used high-quality tin that is also used in military and medicine devices and replaced problematic parts with high quality details. We also made completely new and improved firmware for shifter board, it uses more accurate sensor switching – with this update car does not go into limp mode when shifter rod bushings are little worn-out. We changed also problematic back-light with LED-s and added 0.7 second delay to reverse light – reverse light does not blink anymore when you switch gear from P to D and will light up only when gear rod stays on R position more than 0.7 seconds. Also we are not using any parts that can heat up too much – board stays cool and does not break down due to heating.
Item
Jeep original
Our board
VIA-s (trace connection holes on board)
Copper, small holes (oxidation problems)
Copper, larger holes, coated with gold (Oxidation problem resolved)
PCB pads
Copper coated with tin
Copper coated with gold
Tin
Low quality, brittle and crumbly (cracks over time)
Highest quality, flexible (will not crack over time)
Parts
Some high, some low quality
All possible highest quality
Backlight
EL-tape and inverter, lifetime ca 4000 hours, light weakens over time, the inverter breaks
LED, lifetime 50000+ hours, light does not weaken over time
Firmware
Regular
Improved
Reverse light switching
Always blink when you move lever over reverse gear
0.7 second delay, no blink when you move lever over reverse
Reverse light switch
Sometimes breaks (engineer forgot to add protection diode)
Changed to more powerful and added protection diode
Heating
Major heating, over 100C (common problem why board breaks)
Minimal heating, no major heating components
Coating
Partial coating (the lacquer is sprayed on the board, but not everywhere, humidity can go beneath the coating)
Full coating (completely immersed in the varnish twice (humidity cant go beneath the coating)
Lever position accuracy
Poor, car can go into limp mode when shifter rod bushings are little worn-out
Good, car does not go into limp mode when shifter rod bushings are worn-out
Warranty
12 / 24 months
Lifetime
After you switch your PCB module, you need to erase ENGINE AND GEARBOX fault codes!
Before buying be sure to consult with a specialist and find out the exact fault code list and the problems on the car. We are not reliable for wrong diagnosis put on your car by yourself or someone else. If you have bought a PCB by fault and the problem on your car is not in the PCB we can take the PCB back, but we shall not refund any postage fees. Also we will give refunds only after we have received the items back and have confirmed that they are in the same condition sent out to you.
Russian customers!!! Please contact before buying as Russian customs are very strict on items received from EU.
THIS PCB ONLY FITS TO JEEP GRAND CHEROKEE 2.7 CRD DIESEL MODELS!
For tutorial how to dismount Jeep Grand Cherokee gear selector PCB check
https://jeepswj.com/tutorials/
Please note that this is not an OEM part, but fully compatible with your 2.7 CRD WJ Jeep and our board has better quality than OEM shifter board. Due to our high quality standards we can offer lifetime warranty
https://jeepswj.com/warranty/
Changing a PCB takes about 20 min. and we will be happy to advice you in any problems.
After changing shifter board, you'll probably need to clear engine and transmission fault codes with DRB III or Bosch KTS diagnostic device or our ELM327 based diagnostic software. Sometimes car will work fine without clearing codes, but mostly you need to clear them.
All boards will be shipped in the same or next business day from Estonia, EU. Courier pick up time is at mornings, 10.00 GMT every work day and DHL ships usually to UK within 1 business day if your address is in some bigger city.  Countryside delivery takes more time, 2-3 work days, in rare cases up to 5 work days. Middle UK delivery time is 1,24 business days, so most UK customers will receive PCB on next business day after shipping.
Good luck!