1. Introdução
This manual provides detailed instructions for the installation, operation, and maintenance of your Webasto 1533 Digital Timer. This timer is designed to control Webasto Thermo Top C heaters, allowing for convenient pre-programming of heating cycles. Please read this manual thoroughly before using the device to ensure proper function and safety.
2. Informações de segurança
- Always ensure the vehicle's power supply is disconnected before attempting any installation or maintenance.
- Installation should ideally be performed by a qualified technician to prevent damage to the device or vehicle.
- Do not expose the timer to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
- Use apenas genuíno Webasto replacement parts and accessories.
3. Produto acabadoview
O Webasto 1533 Digital Timer is an oval-shaped control unit featuring an LCD display and intuitive buttons for setting time and programming heating functions. It allows users to schedule heater operation in advance.

Figura 3.1: Frente view do Webasto 1533 Digital Timer, showing the oval shape, LCD display with '7:30' and a flame icon, and control buttons (up, down, set, flame/heater icon, fan icon).

Figura 3.2: O Webasto 1533 Digital Timer displayed with its original packaging, a foam gasket, and a mounting screw. The packaging indicates multilingual labels for 'Digital timer 1533'.
4. Instalação e configuração
O Webasto 1533 Digital Timer is designed for integration with your vehicle's Webasto Thermo Top C heating system. Proper installation is crucial for optimal performance.
4.1 Montagem do temporizador
- Select a suitable location within the vehicle cabin that is easily accessible to the driver and away from direct heat or moisture.
- Ensure there is sufficient space behind the mounting surface for the electrical connector.
- Use the provided mounting screw to secure the timer in place.
4.2 Conexão elétrica
The timer connects to the heater control unit via a dedicated wiring harness (not included, may need to be purchased separately). Refer to your heater's installation manual for specific wiring diagrams.

Figura 4.1: Traseira view do Webasto 1533 Digital Timer, showing the product label with model number '1322580A' and the 4-pin electrical connector.

Figura 4.2: Close-up of the 4-pin electrical connector on the rear of the Webasto 1533 Digital Timer, highlighting the gold-plated pins for connection to the wiring harness.
- Connect the 4-pin connector from the wiring harness to the corresponding port on the back of the timer. Ensure a secure fit.
- Once connected, restore power to the vehicle. The timer display should illuminate.
4.3 Ajustando o Relógio
- Pressione o DEFINIR botão. Os dígitos das horas piscarão.
- Use o < e > botões para ajustar a hora.
- Imprensa DEFINIR Novamente. Os dígitos dos minutos piscarão.
- Use o < e > botões para ajustar os minutos.
- Imprensa DEFINIR a third time to confirm the time.
5. Instruções de operação
5.1 Manual Heater Activation
To manually turn on the heater, press the flame/heater icon button. The heater will start and operate for a preset duration (typically 30 minutes, adjustable via heater settings).
5.2 Programming a Heating Time
The timer allows you to program up to three different start times for your heater.
- Pressione o DEFINIR button repeatedly until 'P1' (Program 1) appears on the display.
- Imprensa DEFINIR again. The hour digits for P1 will flash.
- Use o < e > buttons to set the desired hour.
- Imprensa DEFINIR. The minute digits for P1 will flash.
- Use o < e > botões para definir os minutos desejados.
- Imprensa DEFINIR to confirm P1.
- Repeat steps 1-6 for P2 and P3 if additional programs are desired.
- To activate a program, press the flame/heater icon button until the desired program (P1, P2, or P3) is displayed and the flame icon is solid. The heater will start at the programmed time.
5.3 Deactivating a Program
To deactivate an active program, press the flame/heater icon button until the flame icon disappears from the display.
6. Manutenção
O Webasto 1533 Digital Timer requires minimal maintenance.
- Limpeza: Limpe a tela e casing com um suave, damp pano. Não use produtos de limpeza abrasivos ou solventes.
- Bateria: The timer does not contain user-replaceable batteries for its primary function. Power is supplied by the vehicle's electrical system.
7. Solução De Problemas
| Problema | Possível causa | Solução |
|---|---|---|
| Display está em branco | Sem alimentação; conexão solta | Check vehicle's power supply and timer's electrical connection. |
| Heater does not start at programmed time | Program not activated; incorrect time setting; heater fault | Ensure program is active (flame icon solid). Verify current time and programmed time. Check heater for other faults. |
| Os botões não respondem | Temporary software glitch; physical damage | Disconnect and reconnect power to reset. If problem persists, contact technical support. |
8. Especificações
| Recurso | Detalhe |
|---|---|
| Marca | WebAsto |
| Número do modelo | 1322580A |
| Aquecedores compatíveis | Webasto Thermo Top C (12V) |
| Dimensões (C x L x A) | 11.2 x 8.1 x 3.8 cm |
| Peso do item | 98 g |
| Fonte de energia | 12V (from vehicle) |
9. Garantia e Suporte
Esse Webasto 1533 Digital Timer is a genuine Webasto part, ensuring quality and compatibility with your heating system. For warranty information, please refer to the documentation provided with your original heater or contact your Webrevendedor asto.
Technical support is available for assistance with installation, operation, or troubleshooting. Please contact your authorized Webasto service partner or visit the official WebAsto webSite para informações de contato de suporte.





