SC-18-90-01 Service Bulletin/Repair Instructions

Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
PRIORITY: On Complaint

APPLICABILITY: All Karma Revero

MARKET REGION: North America

PURPOSE: Functional description of the Key Fob to verify proper operation
This key fob function document will aid the technician to verify key fob operation.

The vehicle security system, door locks, and ignition are controlled by the key fob (fig. 1). The

doors and trunk can be locked or unlocked using the key fob. The key fob is part of the

immobilizer system. It operates in the manner described below. You can configure the vehicle’s lights

and horn to provide feedback on locking, unlocking, security system and mirrors.

Each Revero is supplied with two key fobs and separate mechanical key blades.

When Presented with key fob concerns

consider the following:

I. Using the Key Fob - How to (page 2)

II. Verifying Key Fob Functions

III. Key Fob Antennas

IV. In Car Settings

V. Key Fob Battery
fig 1
Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 1 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
I. USING THE KEY FOB - How to:

The buttons on the key fob operate as follows (fig 2):

Button 1: Key Fob Lock: Remote Keyless Entry (“RKE”)

- Press once (1x) to lock the vehicle and activate the vehicle’s security

system (anti-theft alarm is armed)

The vehicle’s lights will briefly flash to confirm system is active.

Audible and Visual feedback is dependent on the selection

made by the user in the Settings Menu on

the Touch Panel Interface (“TPI”)

Passive Lock:

- When exiting the vehicle, press the switch on the exterior door

handle and close the door. All doors should lock and the parking

lights should flash once, indicating the security system is active
fig 2
Note: All other doors must be closed when Passive Locking the vehicle

Passive Lock can only be conducted using the front doors

A Key Fob must be within 1.5 meters of the outside rearview mirror

Remote Cabin Pre-Conditioning (“CPC”): First make sure these settings are active in the touch panel,

the following pages have a description on set up.

- Press lock once (1x), then press and hold the lock button for two (2) seconds to activate the remote

preconditioning feature. The lights will flash twice; one short and one long, to signal successful

activation. The power button will alternate green and amber when CPC is active.

Button 2: Key Fob Unlock: Remote Keyless Entry (“RKE”)

- Press unlock button once (1x) to unlock the driver door. Press a second time to unlock all doors

- The park lights should flash and the mirrors may unfold, if configured, to confirm unlock this is

dependent on the user selection in the Settings menu on the TPI
Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 2 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
Passive Unlock:

- When a programmed key fob is in your possession within the specified range (1.5m), activate an

exterior front door handle. Dependent on your vehicle settings, either a single door, the entire side of

the vehicle, or all doors will open (if a key is seen as inside the vehicle it will not be able to authorize

a passive unlock request, until it is no longer “seen” (or reported by the vehicle) as inside the

passenger compartment.

- The park lights should flash (again dependent on the User settings in the Settings menu in the TPI).

Button 3: Trunk Release:

- Press and hold the trunk release button for three (3) seconds to release the trunk
With a new full capacity and properly inserted battery you can

expect the following operation:

- Remote Keyless Entry, trunk opening, and CPC actions

are available within 10 meters (minimum)

- Passive Entry is available to activate between 1 and 2 meters

from front doors of the vehicle

- Vehicle Start will operate with the key fob inside

passenger compartment
fig 3a
It is not necessary to point the key fob at the vehicle (fig. 3a) but you must be within operating range.

The operating range will vary according to the condition of the key fob battery and other physical

factors. If the vehicle cannot be locked or unlocked using the buttons on the key fob, you may

need to change the key fob battery.
Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 3 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
II. Verifying Key Fob Functions

Key Fob activation (and key fob ID, 1, 2, or 3.) is available to view in Live Data.

This is found in: Module Diagnosis -> Body ->Vehicle Control Module Security -> Measurement Values.

Exercise typical Use Case Scenarios:

Test at the specified distances from every side of the vehicle for remote entry and trunk opening.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.
Starting with the vehicle in “OFF_AWAKE”, all doors closed, and the key fob outside,

45 seconds before this state expires. Lock the vehicle as soon as you exit.

Press button 1, the lock button, then verify the vehicle locks

Allow vehicle to sleep (power vehicle off and wait seven (7) minutes

Passive unlock the vehicle, with assistance place the key 10 meters away and attempt to

passively open the locked vehicle, for every attempt bring the fob closer by a meter until the

specified distance of 1 - 2 meters.

Open driver door, enter vehicle

Place key upright in front cup holder

Close all doors

Turn vehicle on (Karma start button turns green)

Open and Close door

Turn vehicle off

Exit vehicle with key

Passive Lock vehicle

a.

Key outside of vehicle (within 1.5m of outside rear view mirror), all doors

closed except for the one where passive locking will be requested (must be a front door)

b.

While the door is open, press the exterior door button at the handle once

c.

Close door

d.

Move key fob 15 meters or more from the vehicle, confirm the vehicle is locked
Continued on next page

Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 4 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.
DATE: May 2018

Revised August 2018
Allow vehicle to sleep (power vehicle off and wait seven (7) minutes

RKE unlock vehicle

Open driver door

Place key upright in front cup holder

Turn vehicle on (Karma start button turns green)

Close all doors

Turn the vehicle off

Exit vehicle with key

Press button 1, the lock button, then verify the vehicle locks

Allow vehicle to sleep (power vehicle off and wait seven (7) minutes)

Open the Trunk using the key fob, press and hold button 3 for three (3) or more seconds
If the key fobs do not operate in this capacity, begin with battery replacement.

If this key fob still does not function, test the antenna connections- see below.

Replace as needed (normal warranty rates apply) for the affected parts for replacement and diagnosis.
III. Key Fob Antennas:

Antennas which detect the presence of the key fob

are located in the following locations on the Revero

(fig. 3b):

1. Behind the dashboard

2. Beneath the center console

3. Underneath the rear parcel shelf

4. In both external mirrors
fig 3b
Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 5 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
Note: Interference from other radio equipment operating on a similar frequency may also affect the

operation of the key fob. Metal objects and mobile phones or devices held against or in close

proximity to the fob may affect signal reception. If this happens, operate the key fob as close to a

vehicle antenna as possible. If you are still unable to unlock the vehicle with the key fob, use the manual

door lock located on the passenger side front door.

If a problem persists inspection of the antennas may be required.

Measure Low Frequency (“LF”) Antenna resistance value at module connector.

The target resistance value is 1.5 ohms +/- 0.6 ohms.

ECU

VCM

VCM

VCM

DML (Door Module Left)

DMR (Door Module Right)
LF Antenna Location

Left OSRVM

Center Console

Right OSRVM

Trunk Shelf

Instrument Panel
Connector and Pins

CN7-16 & 17

CN7-08 & 20

CN7-18 & 19

CN2-14 & 28

CN2-14 & 28
Remember that the RKE operations: Lock & Unlock from Front, Rear, Left and Right of the vehicle

operate at a minimum distance of 10 meters.

Received Signal Strength Indicator (“RSSI”):

Available in Live Data (as above in section II), to visualize as the key fob signal is sent, as measured

in mV.

RSSI value provides a means of identifying the signal strength received by the vehicle. It allows the

person conducting the troubleshooting exercise to assess the noise floor and compare it to the received

signal. Comparatively a VCM without an RKE antenna connected will show a lower RSSI value compared

to when an RKE antenna is connected. The RSSI also allows to monitor when an RKE signal has been

received.
Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 6 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
As a diagnostic aid the following diagram is available.
Key Not Found - Check Procedure
DIS (No Key Found)

(Weak RF Signals)
1
5
433 MHz HF

(carry ID)
3
Start/Stop

Button
1
VCM

VCM received ID
2
120 kHz RKE

(wake up

Keyfob)
4
2

3
Vehicle power (Fuses)

Check all antennas

(as per preceding page)
4
Check Key Fob Battery
5
Check RKE antenna &

the connection (Headliner)
7
Check HF connector at VCM

(D3300-10)
6
Check RKE cable
6
7
When the key fob is not detected, place the key fob on the external rear view mirror base (fig.3c).

This will energize the fob enough to transmit a signal and allow for the security system to recognize the

fob in order to allow operation.
fig. 3c

Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 7 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
IN CAR SETTINGS:

There are nine different options offered through the touch panel (fig 4a).

To get to the these settings press:

1. My Karma

2. Settings

3. Doors & Mirrors

The following key fob action descriptions assume that all of these settings have been enabled.

The key fob can also be used to activate the Cabin Pre-Condition (“CPC”) feature (fig 4b). This feature

enables the fob to remotely turn on the climate control system and adjust the temperature inside the

vehicle to the pre-configured setting.

To configure CPC press:

1. My Karma

2. Settings

3. Seats & Keys

Under Seats & Keys scroll to CPC Target Temperature and/or CPC Confirmation.
fig 4a
fig 4b
Passive entry to the vehicle is allowed when you activate the exterior door handle switch and you have

a registered key close to the vehicle (in you pocket for example).The doors can be programmed to use

the Passive Lock feature.

Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 8 of 9
Revised: August 2018
Service Communication

SC-18-90-01

MODEL: Karma Revero 

TITLE: Key Fob Function
DATE: May 2018

Revised August 2018
KEY FOB BATTERY

Replacing the Key Fob Battery:

If the vehicle detects that the key fob battery is low, a message will

be displayed in the touch panel: “Key Fob Battery Low” (fig 5a).

Key Fob battery voltage above 3V, is best

Battery thickness at least 3.12mm, make sure it is correct size

to make proper contact!

Note: Proper care to not short-circuit the battery must be taken if thickness

is measured using a metal caliper.
fig 5a
If the key fob battery is low at the time of service, replace as part of the normal

service procedure. Replace the battery every time the vehicle comes in for service under warranty as

a preventative measure for low battery. (normal warranty as applicable). When out of warranty replace

key fob battery as low or when requested.

To change the key fob battery:(fig 5b, 5c, 5d)

1. Place the key fob button side up on a soft surface so as not to mar or scratch any surface

2. Carefully release the battery tray lock. Slide the battery tray out to access the battery

3. Remove the battery and replace with a new battery Ensure proper polarity of coin cell battery when

installing. Positive Terminal must face down.

Note: Ensure battery tray is fully inserted when reinstalling the battery tray in the key fob (there is an

audible “click” when fully inserted).

Additionally, Batteries are type CR2032, 3V with a minimum thickness of 3.12mm. These are available

from Karma, P/N C161194800100.
fig 5b
fig 5c
fig 5d
Karma Automotive Bulletins and service documents are intended for use by experienced and trained Technicians. If you lack the skills, tools, equipment

and a suitable workshop for any procedure described in this document, we suggest you leave such repairs to a Karma retailer and service provider. See

your service provider for advice on whether your vehicle may benefit from the information contained within this document. The information contained in the

Karma Bulletin is accurate at the date of publication. However, Karma Automotive regularly updates technical information. Please check with your Karma

Automotive Retailer and Karma Automotive service provider that the bulletin you intend to use contains the latest available information.
Page 9 of 9
Revised: August 2018

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