Gertzen Elektronik
GSM-Remote
Installation and
Operating Instructions
T91 Telestart in VAG (Audi, VW, Skoda, Seat) cars with originally equipped Webasto park heater (WBUS)
GSM_Remote v1.1
1.
Description
The GSM-Remote permits to control the auxiliary heater of VAG cars (Audi, VW,
Skoda,Seat) with an originally equipped Webasto park heater and the T91
Telestart remote from any place in the world either by a simple call or by using
SMS-messages. Optionally, the successful activation is acknowledged by a callback and a SMS-notification respectively.
On the front side the status-LEDs and the SIM-card tray are arranged:
LED green:
On for the duration of the switch signal
LED amber:
Blinking when communicating with the GSM network
Releasing device for SIM-card tray
SIM-card tray
On the back side the connectors for the power supply and optional equipment are arranged:
Connector for auxiliary equipment
Connector for power supply and auxiliary heater
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 2
2.
Commissioning
Activate SIM-card and insert in existing mobile phone
Enter PIN-code
Disable PIN-code (consult mobile phone manual if required)
Disable Mailbox (typically dial ##002#) after the first successful registration to the GSM-network (this might take up to 1 hour after the initial activation)
Using a pointed object (such as a pen) press in the yellow button by at least
5mm. The SIM-card tray now comes firmly out of the housing:
Remove SIM-card from mobile phone and insert into tray:
Insert holder with SIM-card facing to the ground:
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 3
3.
Installation
Contact your local VAG dealer in order to identify the mounting place of the
T91 transceiver in your car (e.g. for A3 behind side-cover on the right side of the trunk)
Remove the cover and get access to the T91 transceiver
Remove the blue connector from the T91 transceiver and plug it into the corresponding connector of the provided adaptor
Insert the remaining blue connector in the T91 transceiver
Connect the black connector to the GSM-Remote
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 4
4.
Behaviour of the T91 remote in conjunction with the GSM-Remote
The heater can be started at any time by using either of the control devices
(T91, vehicle control menu, GSM-Remote)
If the heater had been started using GSM-Remote the T91 (or any 1533 timer) can be used to switch the heater off properly
However, the heater can be disabled as well using the vehicle control menu but the GSM-Remote is not able to detect this and is blocked for the
duration configured in 5.3 and 5.6 respectively (typically 30 mins). In order
to avoid this blocking time it is required to disable the heater via the GSM-
Remote or via the T91 or 1533 control devices
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 5
5.
Operation using SMS-Messages
5.1. General
The GSM-Remote can be configured, controlled and send status-messages on request using SMS-messages (consider arising expenses!)
The corresponding commands are described in the following sections.
Please pay attention to applying the correct format
The commands are not case sensitive
Every command involves a reply from the GSM-Remote (unless this feature is not disabled). The expected replies are given in this document as well
Invalid commands will be forwarded unchanged to the master telephone number so it is mandatory to setup the master number in the very first step
5.2. Setting the Master Telephone Number
All messages received by the GSM-Remote that do not contain valid commands are forwarded to the master number
In order to receive messages from your provider (indicating a low balance or an approaching invalidation of the SIM-card) and in order to indicate invalid commands the master number must be stated!
Command Positive Reply
TEL0=+491743344556677 OK
Note
Country code and telephone number without 0
5.3. Switching the Heater
The commands listed in this paragraph can also be executed using the app
„EasyStart GSM“ available free of charge for Android and iOS-devices
The temperature request integrated in this app cannot be used (yielding to reply “EXT3 ERROR”)
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 6
By default a status message containing the current heater-state is being sent after every of these commands. This can be disabled according to
paragraph 5.7.
Command Explanation
START Start the heater for the default heating duration
START0630 Scheduled starting time for the heater at
06:30
START50 Start the heater for a duration of 50 minutes
STOP Disable the heater
Reply
STATUS=ON
or
STATUS=OFF
STATUS=TIMER
or
STATUS=ON
STATUS=ON
or
STATUS=OFF
STATUS=ON
or
STATUS=OFF
Note
Changing the default heating duration is
described in 5.6
Essentially 4 digits for the time, no colon , 24 hours format, the heater status is sent a second-time when reaching the time
Range is 1..255
This command also cancels the scheduled time
Additionally, the following replies are being generated by the GSM-Remote in case the heater activation is not successful:
Reply Description
WBUS ERROR No valid communication on W-Bus so far
Possible Cause
This might be due to a bad connection of the GSM-Remote to the W-Bus or a defective heater (e.g. not powered)
In some cases it is useful to check whether a W-Bus controlled heater is present at all
Heater locked due to error HEATER ERROR Heater does not accept command
NO HEATER
RESPONSE
No reply from heater
(after three tries)
HEATER NOT
RUNNING
Heater did accept command, however heater does not start running
Heater always stops after a certain defined time (e.g. after 20 mins) although a higher value was requested
Heater defective or bad W-Bus connection
Heater is in error-state which might be due to low fuel level
The default runtime configured in the vehicle menu is lower than the value requested by the remote. An adaption to a value higher the one configured by RUN=x is required
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 7
The heater can be controlled at any time using any of the available control
devices such as T91, 1533 timer, vehicle control menu (see paragraph 4 for
restrictions)
5.4. Telephone Number Restrictions
By default the telephone number restrictions are disabled and, therefore, every number is allowed to control the heater
Up to five numbers being allowed to control the heater can be configured:
Command
NUMBERCHECK=ON
or
NUMBERCHECK=OFF
Explanation
Enable/disable the telephone number restrictions
TEL0=+4917988888888 Set phone number 0
(Master telephone number)
TEL1=+4917011111111 Set phone number 1
TELx=+4917122222222 Set phone number x ( whereas x is in range of
0 to 4)
Reply Hint
OK Affects SMScontrol and voice calls!
OK
OK
OK
Country code and phone number without 0
Ditto
Ditto
The commands can also be concatenated with a semicolon and the being sent to the GSM-Remote in once:
NUMBERCHECK=ON
;
TEL0=+4917988888888; TEL3=+4917011111111
It is not required to set all three numbers
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 8
5.5. Status- und Configuration Requests
The current status of the heater, the configuration of the number restrictions and the signal quality can be requested by using the following commands:
Command
STATUS?
TEL?
SIGNAL?
Description
Status of the heater
Status of the number restrictions
Signal quality
1(poor) to
4(high)
Reply
STATUS=ON
or
STATUS=OFF
or
STATUS=TIMER
TEL0=+4917988888888
TEL1=+4917011111111
TEL2=+4917122222222
TEL3=
TEL4=
NUMBERCHECK=ON
or
OFF
RSSI:1 to 4
5.6. Default Runtime
The default runtime is used by the commands START, START0630 and when using the voice-call based control of GSM-Remote
By default the value is set to 30
Command Description
RUN=30 Set the default runtime to 30 minutes
Reply Note
OK Range is 1..255
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 9
5.7. Notifications
By default GSM-Remote sends status messages upon the commands used to
control the heater (see section 5.3) containing the current heater state
Although the prepaid SIM-cards require to top up about 15€ annually it might be desired to disable the automatic status messages
Additionally, it can be configured whether status messages shall be sent or a call-back shall be performed when using the call-based control of GSM-
Remote. Alternatively, the notifications on this event can be completely disabled
Command
CALLRESPONSE=OFF
or
CALLRESPONSE=SMS
or
CALLRESPONSE=CALL
CALLRESPONSE=OFF
or
CALLRESPONSE=SMS
or
CALLRESPONSE=CALL
Description
Automatic notification when using the
SMS-commands for controlling the heater: Disable notifications; Enable
SMS status messages; Enable Call-Back notification
Automatic notification when using the voice call for controlling the heater:
Disable notifications; Enable SMS status messages; Enable Call-Back notification
Reply
OK
OK
6. Operation using Voice Calls
6.1. General:
In addition to the SMS-control the GSM-Remotes allows to enable the heater using voice calls
Based on the number of rings the GSM-Remote performs corresponding switching operations. These will be described below
The GSM-Remote does not answer calls, thus the account is not charged at any time
When calling the GSM-Remote and no rings can be observed it is located in a dead-zone. No switching-operation can be carried out
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 10
6.2. Mandatory activation of the heater:
Call number of GSM-Remote and wait until the first ring
Hang up directly after the first ring
The vehicle control menu shows the heater-icon after a couple of seconds:
Depending on the notification configured in 5.7 the following action is
performed: o no call-back (default) o an SMS-notification: The heater status is reporting by the SMS message
Acknowledged altering of the heater state using the call-back functionality:
In the previous case the mandatory activation was achieved by calling the
GSM-Remote and hanging up after the first ring
Waiting until the second (or even more) rings the state of the heater is
altered regardless what the current state is
Depending on the notification configured in section 5.7 the following action
is performed: o a Call-Back (Standard): Applying a call-back to the originating caller ID the GSM-Remote acknowledges that the state after the call is “enabled”. In case no call-back is performed the new state is
“disabled”. Please do not answer the call as this causes undesired costs o an SMS-notification: The heater status is reporting by the SMS message o nothing: All notifications are disabled
The heater can be disabled at any time using any of the available control
devices such as T91, 1533 timer, vehicle control menu (see paragraph 4 for
restrictions)
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 11
7. Prepaid Phone Cards and Control Commands
While the usage of prepaid cards has the advantage of not generating monthly costs it is to be considered that most providers require to top up at least once a year, otherwise the card might be invalidated. It is recommended to keep this in mind and regularly (e.g. once a year) top up a small amount of money.
In order to check the current balance or to top up using a voucher code most providers allow the usage of control commands. The GSM remote allows to apply all typical commands using the remote-specific command CMD=xyz
Please consider that command codes are provider specific. The table below gives two examples that must not necessarily meet those supported by your provider:
Command
CMD=xyz
Description
Execute command xyz
Response
Response generated by provider will be directly forwarded
CMD=*100# Request balance „Balance: 24.19
EUR.“
CMD=*100*CODE# Top up balance using voucher code
„New Balance:
24.19 EUR.“
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 12
8. Technical Specifications
Operating voltage range: 6V – 40V
Current consumption in standby mode: ca. 4 mA
Current consumption during call: max. 150 mA
Temperature range: -30 to + 60 °C
9. Accordance of Deployment
The GSM-Remote is only to be used for switching auxiliary heaters in VAG cars with originally equipped Webasto heaters and the original T91 Telestart remote in accordance with this manual using the provided adaptor cable. Any deviance leads to cancellation of warranty and a denial of liability.
The GSM-Remote must not be used in environments with flammable gases or flammable liquids such as in transportation sectors dealing with dangerous good. Additionally, it is paid attention that the mounting location is selected to be dry and not adjacent to liquids.
10. Development and Sales
Gertzen Elektronik
Christopher Gertzen
Am Maunberg 5
26892 Kluse, Germany
Telephone: +49 (0) 4963/306877
E-Mail: [email protected]
Internet: www.gertzen.org
GSM-Remote for T91 in VAG cars with Webasto heaters – Page 13
