TEM Safe Parking

TEM Safe Parking

The TEM (Trailer Emergency Module) automatically activates the parking brake for greater everyday safety when coupling and decoupling trailers. This avoids uncontrolled trailer movement and reduces the risk of damages to man and material.

Latest version 'TEM Safe Parking Single' enhances safety even more as it offers only one control knob and 'Deadman' function.

TEM Safe Parking - General

Parking and release valve with integrated emergency brake valve as well as a pressure protection valve for auxiliary devices (e.g. air suspension) for two-line air brake equipment in towed vehicles. The TEM® has a flange-fitted release valve and a parking valve for the spring brake. Safe Parking is a new feature, effecting the spring brakes coming into action during uncoupling or pressure loss. Before moving off the spring brake actuators have to be released manually using the parking valve. In particular, the TEM® satisfies the requirements of EEC Braking Systems Directive 71/320 and ECE R 13.



Valve Shunt  Valve
(black knob)   
Park Valve
(red knob)  
Trailer coupled        Operation Conditions      Service Brake System       Park brake /
Spring brake System      
pulled pulled yes Parking (coupled) released engaged
pulled pushed (must be manually pushed) yes drive released released
pulled automatic pulled out no Trailer
released engaged
pushed pulled no Parking (uncoupled) released engaged
pushed pushed no shunting released released


Warning - Danger!
Before starting the journey, the spring brake cylinder must be released manually using the parking valve.



  • The TEM should be attached to the vehicle chassis through its mounting flange, using two M8 screws and spacing washers, tightened to a maximum torque of
    15 Nm (splah and spray water protected).
  • The maximum tightening torque for the threaded bushings is 34 Nm.
  • The 028 047 719 function plate must be attached to a visible area near the palm coupling.
  • Ensure that the operating equipment is easily accessible.
  • Ports that are not needed must be closed off.
  • When painting, the valve openings must be protected to prevent paint penetration.
  • Refer to the respective manufacturer’s instructions for the screwed / push-in fittings.


  1. System without pressure
    Shunt valve (black button) must be pushed in, parking valve (red button) automatically pushed out.
  2. Initial charging
    Apply pressure to port 1; the shunt valve (black button) must go into the operating position (pushed out). The parking valve (red button) remains pushed out.
  3. Automatic emergency braking
    Ensure that the black button is pulled out, and the red button is pushed in. Lower the pressure at port 1 to 0 bar. The air in the spring brakes (port 12/2) exhausts through port 3 automatically activating the emergency brakes (i.e. red button pushed out).
  4. Pressure protection valve
    Instructions for adjustment may be found in the installation instructions, order no.: 000 314 012.
  5. Parking brake valve (red button)
    Apply air pressure to port 1, shunt valve (black button) is automatically pushed out. Push in the parking valve (red button), at least 5.0 bar in the supply (brake) reservoir. Pull out the parking valve (red button), port 12/2 (spring brake system) must vent down to 0 bar, vehicle braked.



According to legal registrating country requirements or the statutory regulations of § 29 StVZO. If defects are discovered, either during examination of the vehicle or when travelling, the valve must be replaced.
The cage filter 029 000 409 in Port 1 is to be exchanged when soiled or damaged.


Technical Data

Operating pressure: pe = 10 bar
Operating temperature: - 40°C - + 80°C
Medium: Air
Weight: approx. 1.2 - 1.6 kg
Pressure protection valve DIN 74279 - C 6-22
Opening pressure: pe =  ca. 6.2 bar
Closing pressure: pe =  min 5.2 bar

Section Drawing

Please find a collection of coloured functional section drawings here.


Function symbol DIN ISO 1219


Port Description
1 Inlet port (Palm coupling RED, supply line)
1-2 Inlet/delivery port (reservoir)
12 Delivery port (spring brake actuator) / DCV EB+
2 Delivery port (spring brake actuator) / closed
3 Exhaust (spring brake actuator)
21 2x delivery port (Pressure Protection Valve, suspension)

For more technical information see: TÜV Report No.: KO258.0E

Symbols used in drawings

352 075 001
352 075 101
352 075 201
352 075 011 352 075 031 352 075 051